Sync Manila Tempest plugin with latest Tempest

Two reasons to do it:
1) Broken compatibility of old Tempest we use with latest dependencies.
2) Manila Tempest plugin is incompatible with latest Tempest.

Change-Id: Iae5a656b72e774d9d62b52d7ffb63edecbb23ca6
Closes-Bug: #1513105
1 file changed
tree: 6442be2066ab15c226c12351b68a62b91a8a241c
  1. manila_tempest_tests/