impore logging for invalid driver name

improve logging to log both actual
and exepect details which helps for
debugging.

fixes: ceph#53

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

internal/controller/driver_controller.go

@@ -266,7 +266,7 @@ func (r *driverReconcile) LoadAndValidateDesiredState() error {
 		// we assume there is another driver CR with an identical name on some other namespace
 		if r.driver.Namespace != ownerObjKey.Namespace || r.driver.Name != ownerObjKey.Name {
 			err := fmt.Errorf("invalid driver name")
-			r.log.Error(err, "Desired name already in use by a different CSI Driver")
+			r.log.Error(err, "Desired name already in use by a CSI Driver in a different namespace", "owner", ownerObjKey, "desired", client.ObjectKeyFromObject(&r.driver))
 			return err
 		}
 	}