NSX|V: do not rename edge if not necessary

Do not rename the edge if it already has the name.

Change-Id: I8d1b71777ad29c11e8e19b462981fe02a23bba77

vmware_nsx/plugins/nsx_v/vshield/edge_appliance_driver.py

@@ -512,6 +512,9 @@ class EdgeApplianceDriver(object):
             # First get the current edge structure
             # [0] is the status, [1] is the body
             edge = self.vcns.get_edge(edge_id)[1]
+            if edge['name'] == name:
+                LOG.debug('Edge %s is already named %s', edge_id, name)
+                return
             # remove some data that will make the update fail
             edge_utils.remove_irrelevant_keys_from_edge_request(edge)
             # set the new name in the request