Apply cinder volume custom constraint

Apply cinder volume custom constraint for resources.

Change-Id: Ibac99df386be916f8e3baa24196eb209c6030cd2
Implements: blueprint cinder-custom-constraints
Add cinder snapshot custom constraint

Add cinder snapshot custom constraint to validate
the existent of the snapshot not wait creation.

Change-Id: I4140dfc212eeb4830632c8450e8c8faad3d165f6
Implements: blueprint cinder-custom-constraints
Merge "Apply cinder volume custom constraint"
Merge "Add cinder snapshot custom constraint"