Adding Encapsulation in VPLS and correcting bugs.

Change-Id: Idc0c1834ae2bbd0fdaf564fd65360cc0f018d18d
diff --git a/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsListCommand.java b/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsListCommand.java
index bfbb054..aca247c 100644
--- a/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsListCommand.java
+++ b/apps/vpls/src/main/java/org/onosproject/vpls/cli/VplsListCommand.java
@@ -23,15 +23,15 @@
 /**
  * CLI to list VPLSs.
  */
-@Command(scope = "onos", name = "vpls-list", description = "Lists the existing VPLSs")
+@Command(scope = "onos", name = "vpls-list", description = "List the VPLSs configured")
 public class VplsListCommand extends AbstractShellCommand {
     private VplsConfigurationService vplsConfigService =
             get(VplsConfigurationService.class);
 
     @Override
     protected void execute() {
-        vplsConfigService.getAllVpls().forEach(vpls -> {
-            print("%s", vpls);
+        vplsConfigService.vplsNames().forEach(vpls -> {
+            print(VplsCommandUtils.VPLS_NAME, vpls);
         });
     }
 }