CLOUDSTACK-6019:CreateVolume from snapshot in NFS is throwing Warning
"sync snapshot from cache to region wide store failed for image store
test".
Revert "Findbugs: different issues solved(cherry picked from commit" as it breaks UserVm API Response

This reverts commit fae05560218ef3bcb962bd424ae5dbf5cb8ede68.

Conflicts:
	server/src/com/cloud/dc/DedicatedResourceVO.java
listSslCerts: removed an exception thrown when there is no certificate mapped to the lbId specified in the list* command. Exception in the list* command should be thrown only when id specified in the command, is invalid CS id, but never in the case when we can't find data satisfying search criteria. In this case we just return empty list