rbd: Enable snapshotting of RBD images

Signed-off-by: Wido den Hollander <wido@42on.com>
CLOUDSTACK-3947: Override getSyncObjType and getSyncObjId in CreateLBStickinessPolicyCmd.java to prevent concurrent operations on Loadbalancer in a network
(cherry picked from commit d571b49d0004a290dc68697680959397c848c0b8)
CLOUDSTACK-3351: Fix add cluster API to set right hypervisor type

Signed-off-by: Abhinandan Prateek <aprateek@apache.org>
- CLOUDSTACK-3229: Adds a guard condition to s3xen to prevent  double
  "/" in the resource path if the key starts with a "/" and corrects a
log message from adding an additional "/"
CLOUDSTACK-3981. ListAccounts always sets 'networkTotal' to 0.
Add vpc resource count to the response. And set the right values for network resource count.