Fix Brick LVM test command parsing

The case reporting only one fake-volumes VG was never hit, which also
caused us to not test the lvcreate -T path.

Change-Id: If43d6aff5f90d6eca24b3df790d8ad3a86bfc8f3
Merge "Fix Brick LVM test command parsing"
(Test commit) Change README to reflect Jio's fork of Cinder

Change-Id: I3f26c0a736e63725aec24ca2fa12c707b8e6460f