Pseudowire support for leaf-spine

- Added pw support for pseudowires containing leaf and spine switches as endpoints.
- Inject empty pw config if it is not found for the first time
- Minor refactoring such as more log messages and fixing missing javadoc

Change-Id: Ib57d39cfa36fcd48c01b5781c7445a3f1ffcfbda
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/cli/PseudowireAddCommand.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/cli/PseudowireAddCommand.java
index d612475..d916823 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/cli/PseudowireAddCommand.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/cli/PseudowireAddCommand.java
@@ -98,7 +98,7 @@
                 print("Configuration for pwaas was not found! Initialize the configuration first through netcfg.");
                 break;
             default:
-                print("Pseudowire was added to the configuration succesfully, please do check logs for any errors!");
+                break;
         }
 
     }