CLOUDSTACK-871. DOC. Incorporate review comments in VM base image update.
CLOUDSTACK-4412: NPE while trying to force delete zone wide primary
storage when volumes are present.
CLOUDSTACK-4376: fix cloud-early-config to workaround vSwitch stall in VPC mode. fix potential NPE in DirectAgentAttache in processing answers from resource
delete snapshot_store_ref if the snapshot is in error state
CLOUDSTACK-3950: UI > set g_regionsecondaryenabled to true after adding region-wide secondary storage.