Add volume attribute support to volume created using clone, snapshot

The following patch adds support for volume attributes (setting of
storage pool, replicas, dio, write affinity etc) in case of volume
creation triggered using snapshot, clone.

Change-Id: Ia6e24cafb85c0b2996e2524b45c189fb38e83848
Closes-Bug: #1386650
Merge "Add volume attribute support to volume created using clone, snapshot"