CLOUDSTACK-3565 - fix for new libvirt behavior when defining NFS
pools that are already mounted in KVM hypervisor
CLOUDSTACK-4659: Add the missing feature back for GC VMware worker VMs
CLOUDSTACK-4659: Fix the regression caused by worker VM consolidation for GC purpose
forgot to commit a modified file
CLOUDSTACK-4534:[object_store_refactor] Deleting uploaded volume is not
deleting the volume from backend.