Move PCE label handling from APP to protocol.

Change-Id: I26ae21b27ac2dc9ae3302030f6860e0e371c342c
diff --git a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepControllerImpl.java b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepControllerImpl.java
index 24193bd..64230c5 100644
--- a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepControllerImpl.java
+++ b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepControllerImpl.java
@@ -111,13 +111,13 @@
     @Override
     public Boolean deleteTunnel(String id) {
         // TODO Auto-generated method stub
-        return null;
+        return false;
     }
 
     @Override
     public Boolean updateTunnelBandwidth(String id, long bandwidth) {
         // TODO Auto-generated method stub
-        return null;
+        return false;
     }
 
     @Override