The manila-plugin interface was the cause of bug #1718152. This
is just to rebuild it and also migrate .testr.conf to .stestr.conf
Change-Id: I492d11e6b7b83cbd8e78f965a86dbfa8624114d4
Related-Bug: #1718152
Depends-On: Ifc025d063d5fba5f2b8b20773b4a9543f883a0ea