Remove skipException for volume creation failure

Since Ice367b73303d74c529351d7bd4d9a4e9b1348e07 , the check has been
added when nova-volume(not cinder) was enabled. At the time, we didn't
have enough resources on the gate and made the resource creation
failure as skip.
However that skip might hide configration issues and we have removed
the similar skip code on Ib82fabb1684ee6beaac2a7c45b0b2dc8ec5d6b4c.
There is still the same skip code in Tempest, and this patch removes
it.

Change-Id: Ib1e851a6380b694f7bdaefdf098d73f791111f6d
Closes-Bug: #1401290
1 file changed