container creation fails with error if driver is glance

[Pradeep Kumar Singh]

2016-11-02 08:23:50.101 DEBUG zun.image.glance.driver [req-35dead21-e1f9-427d-b763-e7c769a2990f admin admin] Image nginx was not found in glance pull_image /opt/stack/zun/zun/image/glance/driver.py:58
2016-11-02 08:23:50.101 ERROR zun.compute.manager [req-35dead21-e1f9-427d-b763-e7c769a2990f admin admin] Unexpected exception: local variable 'image' referenced before assignment
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager Traceback (most recent call last):
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager File "/opt/stack/zun/zun/compute/manager.py", line 72, in _do_container_create
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager image_path = image_driver.pull_image(context, container.image)
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager File "/opt/stack/zun/zun/image/driver.py", line 119, in pull_image
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager return image
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager UnboundLocalError: local variable 'image' referenced before assignment
2016-11-02 08:23:50.101 8399 ERROR zun.compute.manager

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/393398

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/393398
Committed: https://git.openstack.org/cgit/openstack/zun/commit/?id=d8afdd5978b844a3d4b71a3ee3ed1393e3780a83
Submitter: Jenkins
Branch: master

commit d8afdd5978b844a3d4b71a3ee3ed1393e3780a83
Author: Pradeep Kumar Singh <email address hidden>
Date: Thu Nov 3 10:59:37 2016 +0000

    Fixing image driver error when driver is glance

    This patch fixes two bugs.
    1.Currently when image driver is glance driver
      container creation is failing due to bug in
      image driver code, this patch fixes that.
    2.Currently during image pulling in docker image
      driver , if image is not found it silently ignores
      that, and container creation fails in create stage
      due to image not found error, while it should fail
      during image pull.

    Closes-Bug: 1638494
    Closes-Bug: 1638877

    Change-Id: Ie3131bbf7dd6420977dc2579802975eca213b436