Requestor FRM to update the sw views on remote execution

- When FRM relay the flow add/remove/modify action to an executor
  FRM on another cluster node, it should be in charge of updating
  the sw view caches. As this happens inside the caller application's transaction.
  Currently the executor updates the cache, update which is not
  reflected in the requestor until the caller application commits the transaction.

Change-Id: I36f3efa2770e71c24e0d059d6bf08eee2c1684f5
Signed-off-by: Alessandro Boch <aboch@cisco.com>
Merge "Requestor FRM to update the sw views on remote execution"