OSPF protocol manual merge from 1.6, due to cherry pick merge conflict

Change-Id: I93653e745468722ce95533537a79e897b4292f5d
diff --git a/protocols/ospf/api/src/main/java/org/onosproject/ospf/controller/OspfRouterId.java b/protocols/ospf/api/src/main/java/org/onosproject/ospf/controller/OspfRouterId.java
index ba512a5..9590ee2 100644
--- a/protocols/ospf/api/src/main/java/org/onosproject/ospf/controller/OspfRouterId.java
+++ b/protocols/ospf/api/src/main/java/org/onosproject/ospf/controller/OspfRouterId.java
@@ -29,7 +29,7 @@
  */
 public class OspfRouterId {
 
-    private static final String SCHEME = "ospf";
+    private static final String SCHEME = "l3";
     private static final long UNKNOWN = 0;
     private final IpAddress ipAddress;