Comment 4 for bug 1714412

Looking at the undercloud's /var/log/message, the push to the local registry doesn't seem to work so well after all:

Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 dockerd-current: time="2017-08-31T23:12:48.961420450Z" level=debug msg="Pushing repository: 192.168.24.1:8787/centos-binary-rabbitmq:latest"
Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 dockerd-current: time="2017-08-31T23:12:48.962981829Z" level=debug msg="Checking for presence of layer sha256:64745862514c538f29fa0f6e7ce64cd10f557e49f0d3bc44a6171e13aa2a955b (sha256:fff2c763c2f18eb11c18f042eb27abdfec8d2f96aea74804a26d2f5fc25c4a1b) in 192.168.24.1:8787/centos-binary-rabbitmq"
Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 dockerd-current: time="2017-08-31T23:12:48.963218174Z" level=debug msg="Checking for presence of layer sha256:09fecf9fbf7a5be06610b6408b4b3e3500d611528f2e0471d1472c7702c0eb5e (sha256:c93a5859334766b76f51f6164fdbb79fe5de4ac41f6164f1e04e75e5abdc2878) in 192.168.24.1:8787/centos-binary-rabbitmq"
Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 dockerd-current: time="2017-08-31T23:12:48.964151714Z" level=debug msg="Checking for presence of layer sha256:eeea14b858a4f352006973dcebe7ffa921f39b3f8a84fd13570cc8b15d128b53 (sha256:32d6f31a7a57f7cf8186e91c30df7f65ca1298a80ce163e5b7eaf6afdec87cd3) in 192.168.24.1:8787/centos-binary-rabbitmq"
Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 dockerd-current: time="2017-08-31T23:12:48.964314380Z" level=debug msg="Checking for presence of layer sha256:c14f1fbd13d19b1e443d3691f283217828ea7f9b6817076173c5aa5631667bf0 (sha256:a180cd39a22a920313281e235c4c943758d0d0ae30c428e2855906ff57fd5c3a) in 192.168.24.1:8787/centos-binary-rabbitmq"
Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 dockerd-current: time="2017-08-31T23:12:48.966393447Z" level=debug msg="Checking for presence of layer sha256:0d14e4801b0cb05dc561cb19cbf68f86971205f7469af432ac11829ed4bbb336 (sha256:253832471aa49670aab81ed492c62cf5027a072962730c86b01b4c5326ea482e) in 192.168.24.1:8787/centos-binary-rabbitmq"
Aug 31 23:12:48 centos-7-2-node-rax-ord-10727868 registry: time="2017-08-31T23:12:48Z" level=error msg="response completed with error" err.code="blob unknown" err.detail=sha256:c93a5859334766b76f51f6164fdbb79fe5de4ac41f6164f1e04e75e5abdc2878 err.message="blob unknown to registry" go.version=go1.7.4 http.request.host="192.168.24.1:8787" http.request.id=1648a1ef-3b4d-42bd-9c36-ed543b0c254f http.request.method=HEAD http.request.remoteaddr="192.168.24.1:41018" http.request.uri="/v2/centos-binary-rabbitmq/blobs/sha256:c93a5859334766b76f51f6164fdbb79fe5de4ac41f6164f1e04e75e5abdc2878" http.request.useragent="docker/1.12.6 go/go1.7.4 kernel/3.10.0-514.26.2.el7.x86_64 os/linux arch/amd64 UpstreamClient(docker-sdk-python/2.4.2)" http.response.contenttype="application/json; charset=utf-8" http.response.duration=10.875742ms http.response.status=404 http.response.written=157 instance.id=945b223b-1b12-493f-8060-b32042fc2aac vars.digest="sha256:c93a5859334766b76f51f6164fdbb79fe5de4ac41f6164f1e04e75e5abdc2878" vars.name=centos-binary-rabbitmq version="v2.6.0+unknown"