g-s-s can ignore lockfile and upload two identical images into glance

[Mike McCracken]

# in a recent install, I saw this:

ubuntu@juju-machine-3-lxc-3:~$ glance image-list
+--------------------------------------+-----------------------------------------------------------------+-------------+------------------+-----------+--------+
| ID | Name | Disk Format | Container Format | Size | Status |
+--------------------------------------+-----------------------------------------------------------------+-------------+------------------+-----------+--------+
| e7a72008-3031-4b71-9b53-aa07e10cf0cc | auto-sync/ubuntu-trusty-14.04-amd64-server-20150901.1-disk1.img | qcow2 | bare | 258736640 | active |
| fac3e5b5-bfe2-4651-b7a4-8b9ba85241ef | auto-sync/ubuntu-trusty-14.04-amd64-server-20150901.1-disk1.img | qcow2 | bare | 258736640 | active |
+--------------------------------------+-----------------------------------------------------------------+-------------+------------------+-----------+--------+

ubuntu@juju-machine-3-lxc-3:~$ glance image-show e7a72008-3031-4b71-9b53-aa07e10cf0cc
+------------------------------+-----------------------------------------------------------------+
| Property | Value |
+------------------------------+-----------------------------------------------------------------+
| Property 'architecture' | x86_64 |
| Property 'content_id' | auto.sync |
| Property 'item_name' | disk1.img |
| Property 'product_name' | com.ubuntu.cloud:server:14.04:amd64 |
| Property 'source_content_id' | com.ubuntu.cloud:released:download |
| Property 'version_name' | 20150901.1 |
| checksum | 7002ada3e78e3040810a06624a52e52b |
| container_format | bare |
| created_at | 2015-09-09T05:43:12.000000 |
| deleted | False |
| disk_format | qcow2 |
| id | e7a72008-3031-4b71-9b53-aa07e10cf0cc |
| is_public | True |
| min_disk | 0 |
| min_ram | 0 |
| name | auto-sync/ubuntu-trusty-14.04-amd64-server-20150901.1-disk1.img |
| owner | da2ae731dbb9463fb3b4535e1c5dfca9 |
| protected | False |
| size | 258736640 |
| status | active |
| updated_at | 2015-09-09T05:43:14.000000 |
+------------------------------+-----------------------------------------------------------------+
ubuntu@juju-machine-3-lxc-3:~$ glance image-show fac3e5b5-bfe2-4651-b7a4-8b9ba85241ef
+------------------------------+-----------------------------------------------------------------+
| Property | Value |
+------------------------------+-----------------------------------------------------------------+
| Property 'architecture' | x86_64 |
| Property 'content_id' | auto.sync |
| Property 'item_name' | disk1.img |
| Property 'product_name' | com.ubuntu.cloud:server:14.04:amd64 |
| Property 'source_content_id' | com.ubuntu.cloud:released:download |
| Property 'version_name' | 20150901.1 |
| checksum | 7002ada3e78e3040810a06624a52e52b |
| container_format | bare |
| created_at | 2015-09-09T05:45:52.000000 |
| deleted | False |
| disk_format | qcow2 |
| id | fac3e5b5-bfe2-4651-b7a4-8b9ba85241ef |
| is_public | True |
| min_disk | 0 |
| min_ram | 0 |
| name | auto-sync/ubuntu-trusty-14.04-amd64-server-20150901.1-disk1.img |
| owner | da2ae731dbb9463fb3b4535e1c5dfca9 |
| protected | False |
| size | 258736640 |
| status | active |
| updated_at | 2015-09-09T05:45:54.000000 |
+------------------------------+-----------------------------------------------------------------+

## here's what's going on in the logs

DEBUG * 09-09 05:40:39 [PID:6844] * urllib3.connectionpool * "GET /releases/server/releases/trusty/release-20150901.1/ubuntu-14.04-server-cloudimg-amd64-disk1.img HTTP/1.1" 301 296
DEBUG * 09-09 05:40:39 [PID:6844] * urllib3.connectionpool * Setting read timeout to <object object at 0x7f3221609170>
DEBUG * 09-09 05:40:40 [PID:6844] * urllib3.connectionpool * "GET /releases/trusty/release-20150901.1/ubuntu-14.04-server-cloudimg-amd64-disk1.img HTTP/1.1" 200 258736640
INFO * 09-09 05:41:01 [PID:6857] * root * glance-simplestreams-sync started.
INFO * 09-09 05:41:01 [PID:6857] * root * /var/run/glance-simplestreams-sync.pid is locked, exiting
^^^ this is good behavior

INFO * 09-09 05:42:01 [PID:6864] * root * glance-simplestreams-sync started.
^^^ 6864 should have checked, found it locked, and exited but instead:

DEBUG * 09-09 05:42:01 [PID:6864] * keystoneclient.session * REQ: curl -i -X POST http://172.16.0.50:5000/v2.0/tokens -H "Content-Type: application/json" -H "User-Agent: python-keystoneclient" -d '{"auth": {"passwordCredentials": {"username": "image-stream", "passwo
rd": "5pWcb7tPnPSBkWRHjnZb6YK9CNk6qPtc5yVpBtZHYhcHdbnx34LN3GLc7bK4PFb6"}, "tenantId": "da2ae731dbb9463fb3b4535e1c5dfca9"}}'
INFO * 09-09 05:42:01 [PID:6864] * urllib3.connectionpool * Starting new HTTP connection (1): 172.16.0.50
DEBUG * 09-09 05:42:01 [PID:6864] * urllib3.connectionpool * Setting read timeout to None