Detangling incubator: virtual nets, tunnels, resource labels, oh my

- virtual networking moved to /apps/virtual; with CLI & REST API
- tunnels and labels moved to /apps/tunnel; with CLI & REST API; UI disabled for now
- protobuf/models moved to /core/protobuf/models
- defunct grpc/rpc registry stuff left under /graveyard
- compile dependencies on /incubator moved to respective modules for compilation
- run-time dependencies will need to be re-tested for dependent apps

- /graveyard will be removed in not-too-distant future

Change-Id: I0a0b995c635487edcf95a352f50dd162186b0b39
diff --git a/apps/tetunnel/BUILD b/apps/tetunnel/BUILD
index bac5864..9467b00 100644
--- a/apps/tetunnel/BUILD
+++ b/apps/tetunnel/BUILD
@@ -1,4 +1,5 @@
 BUNDLES = [
+    "//apps/tunnel/api:onos-apps-tunnel-api",
     "//apps/tetunnel/api:onos-apps-tetunnel-api",
     "//apps/tetunnel/app:onos-apps-tetunnel-app",
 ]