This change adds the first scenario test to the
Barbican Tempest plugin. This scenatio tests Nova
and Glance's image signature verification
functionality.
Depends-On: Ifdf8b426c21e4b3a51f97cbc3d95eb842eb04515
Change-Id: Id9629ecbbc75e19eec81f60daec7b0a085bcdc12
Add first API test and register the client with
the new tempest.lib client interface.
Change-Id: I27f15375c46faa48cd56c8d52ecfd585fb325239
Implements: bp tempest-plugin