
Since Id4906cbdebd820d3349a4a3211ebb34491516c68, the plugin doesn't need to check for duplicate security-group rule as the base class will do this check. Also explicitly set port-security to default value if not specified in the request body for create_network, otherwise, some unittest may fail. Change-Id: I9f44e16616da7a2b79220ce6f37318bb50985470