Remove unused method deleteVbdByPath from KVM storage classes
(cherry picked from commit c3bc9d65ddb41fe9ffd8936e5bb58ad2d6d1c409)
CLOUDSTACK-4282
    allow overlapped subnet with different VLANs in shared network
CLOUDSTACK-4111: UI > IP Address page > Associate New IP dialog - show/hide cross zone dropdown upon region "Local" in listRegions API response.