Failures in the gate suggest that it is now somehow possible for the
Glance image created by a snapshot to appear to have been created even
while the Nova server remains in a state like 'image_uploading'. Servers
in this state cannot be rebuilt (to restore a snapshot). To ensure that
the snapshot has actually completed before the resource is marked
SNAPSHOT_COMPLETE, check the task state of the server as well as the
state of the snapshot image in Glance.
Change-Id: I2b5cddcbeab849054d84501dfcec48442f3666d3
Co-Authored-By: Rico Lin <rico.lin.guanyu@gmail.com>
Task: 36964
9dd523c311