Categorize horizon gate rebase unit test fail

This was fixed by a rebase since the tests failed
after a merge in the gate.

This is just to get the failures off the uncategorized
bugs page.

Change-Id: Id48aee04b377a5bdbe7cded9a8256c1f75ca7865
Related-Bug: #1331153
Merge "Categorize horizon gate rebase unit test fail"