Create image using 'owner' parameter

This patch is uploaded, since there is a bug report[1],
while trying to create image using 'owner' parameter.
The bug is also occurred in update operation.

NOTE: Create image with owner different from tenant owner by
      using "owner" parameter requires an admin privileges.

[1] https://bugs.launchpad.net/glance/+bug/1420008/comments/4

Change-Id: I2601f09ca86b7729db644e55121b964e71c1bb3e
Related-Bug: #1420008
3 files changed