Closes-Bug: #1401627
Issue: nova/cinder volume ids are not properly computed causing
       live migration configuration to fail.
Fix: Now proper nova/cinder volume ids are computed

Change-Id: I6333f4f61fd60545b2f562de80ccc39e46046c8f
Test: Verified the fix by running fab setup_nfs_livem_global
Merge "Closes-Bug: #1401627 Issue: nova/cinder volume ids are not properly computed causing        live migration configuration to fail. Fix: Now proper nova/cinder volume ids are computed" into R2.0