I turned in DEBUG and ran regiond in foreground and didn't get much more info. This output shows me (from another console) deleting a previous attempt and then retrying the boot-resources create. (the change in the image name from the initial report was my doing to see if the underscores or name length could be an issue)

I would really appreciate some next steps that I could undertake to help diagnose this, even if there is no immediate solution.

2016-05-16 16:52:01 [-] 10.10.1.17 - - [16/May/2016:16:52:01 +0000] "DELETE /MAAS/api/2.0/boot-resources/33/ HTTP/1.1" 204 - "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:08 [-] 127.0.0.1 - - [16/May/2016:16:52:08 +0000] "GET /MAAS/rpc/ HTTP/1.0" 200 102 "-" "provisioningserver.rpc.clusterservice.ClusterClientService"
2016-05-16 16:52:32 [-] 10.10.1.17 - - [16/May/2016:16:52:32 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:33 [-] 10.10.1.17 - - [16/May/2016:16:52:32 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:33 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:33 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:33 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:33 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:33 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:34 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:34 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:35 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:35 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:36 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:36 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:37 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:37 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 127.0.0.1 - - [16/May/2016:16:52:38 +0000] "GET /MAAS/rpc/ HTTP/1.0" 200 102 "-" "provisioningserver.rpc.clusterservice.ClusterClientService"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:38 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:39 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:39 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:39 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:39 [-] 10.10.1.17 - - [16/May/2016:16:52:38 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:39 [-] 10.10.1.17 - - [16/May/2016:16:52:39 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:40 [-] 10.10.1.17 - - [16/May/2016:16:52:40 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:40 [-] 10.10.1.17 - - [16/May/2016:16:52:40 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:40 [-] 10.10.1.17 - - [16/May/2016:16:52:40 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:40 [-] 10.10.1.17 - - [16/May/2016:16:52:40 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:40 [-] 10.10.1.17 - - [16/May/2016:16:52:40 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:41 [-] 10.10.1.17 - - [16/May/2016:16:52:40 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:43 [-] 10.10.1.17 - - [16/May/2016:16:52:43 +0000] "PUT /MAAS/api/2.0/boot-resources/34/upload/62/ HTTP/1.1" 200 2 "-" "Python-httplib2/0.9.1 (gzip)"
2016-05-16 16:52:43 [RegionServer,0,10.100.0.16] Rack controller (4y3h7n) has imported boot resources.
2016-05-16 16:52:44 [-] 127.0.0.1 - - [16/May/2016:16:52:43 +0000] "GET /MAAS/images-stream/streams/v1/index.json HTTP/1.1" 200 262 "-" "python-requests/2.9.1"
2016-05-16 16:52:44 [-] 127.0.0.1 - - [16/May/2016:16:52:43 +0000] "GET /MAAS/images-stream/custom/amd64/generic/coreos899170/20160516/root-dd HTTP/1.1" 404 857 "-" "python-requests/2.9.1"
2016-05-16 16:53:08 [-] 127.0.0.1 - - [16/May/2016:16:53:08 +0000] "GET /MAAS/rpc/ HTTP/1.0" 200 102 "-" "provisioningserver.rpc.clusterservice.ClusterClientService"
2016-05-16 16:53:38 [-] 127.0.0.1 - - [16/May/2016:16:53:38 +0000] "GET /MAAS/rpc/ HTTP/1.0" 200 102 "-" "provisioningserver.rpc.clusterservice.ClusterClientService"
2016-05-16 16:54:08 [-] 127.0.0.1 - - [16/May/2016:16:54:07 +0000] "GET /MAAS/rpc/ HTTP/1.0" 200 102 "-" "provisioningserver.rpc.clusterservice.ClusterClientService"