ONOS-1736 - Moved log.warn for property reset to be emitted only when the proper…

…ty itself is not known; it will not be emitted when the component is not known.

Change-Id: Ib0ae105336c2fb2bcddfcf2c8a69ff6a2c501a59

@@ -196,10 +196,10 @@ public class ComponentConfigManager implements ComponentConfigService {
                 triggerUpdate(componentName);
                 return;
             }
-        }
             log.warn("Unable to reset non-existent property {} for component {}",
                      name, componentName);
         }
+    }
 
     // Loads existing property values that may have been set.
     private void loadExistingValues(String componentName) {