[upgrade][8.0] Keystone failed to start keystone - systemctl -p ActiveState show start-container.service

[sryabin]

Steps to reproduce:
1. Deploy 7.0 Fuel master
2. Backup data using octane
3. Install Fuel 8.0
4. Apply latest MU + proposed MU
5. Try to restore the backup

[2016-07-05 11:59:02,453] INFO octane.util.subprocess Started process systemctl[7316]: dockerctl shell keystone systemctl -p ActiveState show start-container.service
[2016-07-05 11:59:02,665] INFO octane.util.subprocess Process systemctl finished with return value 0
[2016-07-05 11:59:02,666] ERROR octane.util.docker Container keystone failed to start, exiting
[2016-07-05 11:59:02,666] ERROR octane Container keystone failed to start
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/cliff/app.py", line 374, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/lib/python2.7/site-packages/cliff/command.py", line 54, in run
    self.take_action(parsed_args)
  File "/usr/lib/python2.7/site-packages/octane/commands/restore.py", line 56, in take_action
    self.get_context(parsed_args))
  File "/usr/lib/python2.7/site-packages/octane/commands/restore.py", line 31, in restore_data
    archivator.restore()
  File "/usr/lib/python2.7/site-packages/octane/handlers/backup_restore/postgres.py", line 67, in restore
    docker.wait_for_container(self.db)
  File "/usr/lib/python2.7/site-packages/octane/util/docker.py", line 192, in wait_for_container
    _wait_for_start_container(container, attempts, delay)
  File "/usr/lib/python2.7/site-packages/octane/util/docker.py", line 210, in _wait_for_start_container
    raise Exception("Container %s failed to start" % container)
Exception: Container keystone failed to start

Additional information:
 This bug is not duplicated of https://bugs.launchpad.net/fuel/+bug/1599094

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/337665
Committed: https://git.openstack.org/cgit/openstack/fuel-octane/commit/?id=046f272ffc65aff8662427efaf9e3d21d3b7ab28
Submitter: Jenkins
Branch: stable/8.0

commit 046f272ffc65aff8662427efaf9e3d21d3b7ab28
Author: Sergey Abramov <email address hidden>
Date: Tue Jul 5 16:34:02 2016 +0300

    Destroy contaniner on postgres restore step

    Stopped container hasn't openrc file so it's never started successfully
    after restore

    Closes-bug: 1599143
    Change-Id: I385c603e7d82b4146cde83c4461c0a6a4e550433