Sync with latest Tempest changes

The migration of cli test framework to tempest-lib in Tempest
project affects our using of this plugin.

https://github.com/openstack/tempest/commit/411130a0

So, we need to update it.

Change-Id: If5bdaae3739c7a7ae7362a92583750595f88b913
Closes-Bug: #1389542