ONOS-4512 vtn-web can't delete router/net/floating/port

Change-Id: I6860aed0c719d4c8f62f21055e650f9f7b29a6f8

@@ -151,8 +151,10 @@ public class FloatingIpWebResource extends AbstractWebResource {
         }
     }
 
-    @Path("{floatingIpUUID}")
     @DELETE
+    @Path("{floatingIpUUID}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     public Response deleteSingleFloatingIp(@PathParam("floatingIpUUID") String id)
             throws IOException {
         try {

@@ -158,8 +158,10 @@ public class RouterWebResource extends AbstractWebResource {
         }
     }
 
-    @Path("{routerUUID}")
     @DELETE
+    @Path("{routerUUID}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     public Response deleteSingleRouter(@PathParam("routerUUID") String id)
             throws IOException {
         try {

@@ -147,8 +147,10 @@ public class SubnetWebResource extends AbstractWebResource {
         }
     }
 
-    @Path("{subnetUUID}")
     @DELETE
+    @Path("{subnetUUID}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     public Response deleteSingleSubnet(@PathParam("subnetUUID") String id)
             throws IOException {
         try {

@@ -240,6 +240,8 @@ public class TenantNetworkWebResource extends AbstractWebResource {
 
     @DELETE
     @Path("{id}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     public Response deleteNetworks(@PathParam("id") String id) {
         log.debug("Deletes network by identifier {}.", id);
         Set<TenantNetworkId> networkSet = new HashSet<>();

@@ -130,8 +130,10 @@ public class VirtualPortWebResource extends AbstractWebResource {
         }
     }
 
-    @Path("{portUUID}")
     @DELETE
+    @Path("{portUUID}")
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
     public Response deletePorts(@PathParam("portUUID") String id) {
         Set<VirtualPortId> vPortIds = new HashSet<>();
         try {