Fix some JSON related deprecation and javadoc warnings

Change-Id: If39c0bbe578794c8308b24d9290e269bd14b9219
diff --git a/apps/routing/src/main/java/org/onosproject/routing/cli/BgpRoutesListCommand.java b/apps/routing/src/main/java/org/onosproject/routing/cli/BgpRoutesListCommand.java
index 3b032c0..c3d3c52 100644
--- a/apps/routing/src/main/java/org/onosproject/routing/cli/BgpRoutesListCommand.java
+++ b/apps/routing/src/main/java/org/onosproject/routing/cli/BgpRoutesListCommand.java
@@ -122,8 +122,8 @@
         if (outputJson()) {
             ObjectMapper mapper = new ObjectMapper();
             ObjectNode result = mapper.createObjectNode();
-            result.put("routes4", json(routes4));
-            result.put("routes6", json(routes6));
+            result.set("routes4", json(routes4));
+            result.set("routes6", json(routes6));
             print("%s", result);
         } else {
             // The IPv4 routes
@@ -248,7 +248,7 @@
         result.put("bgpId",
                    route.getBgpSession().remoteInfo().bgpId().toString());
         result.put("origin", Update.Origin.typeToString(route.getOrigin()));
-        result.put("asPath", json(mapper, route.getAsPath()));
+        result.set("asPath", json(mapper, route.getAsPath()));
         result.put("localPref", route.getLocalPref());
         result.put("multiExitDisc", route.getMultiExitDisc());
 
@@ -273,10 +273,10 @@
             for (Long asNumber : pathSegment.getSegmentAsNumbers()) {
                 segmentAsNumbersJson.add(asNumber);
             }
-            pathSegmentJson.put("segmentAsNumbers", segmentAsNumbersJson);
+            pathSegmentJson.set("segmentAsNumbers", segmentAsNumbersJson);
             pathSegmentsJson.add(pathSegmentJson);
         }
-        result.put("pathSegments", pathSegmentsJson);
+        result.set("pathSegments", pathSegmentsJson);
 
         return result;
     }