[ONOS-4171] Merge PCEP and BGP providers into common BGPCEP provider.

Change-Id: Ia87f0898e51704ce8d02d877e9f0d57219099a53
diff --git a/providers/pcep/topology/src/main/java/org/onosproject/provider/pcep/topology/impl/PcepTopologyProvider.java b/providers/pcep/topology/src/main/java/org/onosproject/provider/pcep/topology/impl/PcepTopologyProvider.java
index c5257eb..75a53f3 100644
--- a/providers/pcep/topology/src/main/java/org/onosproject/provider/pcep/topology/impl/PcepTopologyProvider.java
+++ b/providers/pcep/topology/src/main/java/org/onosproject/provider/pcep/topology/impl/PcepTopologyProvider.java
@@ -81,8 +81,11 @@
 public class PcepTopologyProvider extends AbstractProvider
         implements LinkProvider, DeviceProvider {
 
+    /**
+     * Creates instance of PCEP topology provider.
+     */
     public PcepTopologyProvider() {
-        super(new ProviderId("pcep", "org.onosproject.provider.pcep"));
+        super(new ProviderId("l3", "org.onosproject.provider.pcep"));
     }
 
     private static final Logger log = LoggerFactory