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/protocols/pcep/server/api/BUILD b/protocols/pcep/server/api/BUILD
index 604c1f3..0826d45 100644
--- a/protocols/pcep/server/api/BUILD
+++ b/protocols/pcep/server/api/BUILD
@@ -1,8 +1,8 @@
 COMPILE_DEPS = CORE_DEPS + [
     "@io_netty_netty//jar",
+    "//apps/tunnel/api:onos-apps-tunnel-api",
     "//protocols/pcep/pcepio:onos-protocols-pcep-pcepio",
     "//apps/pcep-api:onos-apps-pcep-api",
-    "//incubator/api:onos-incubator-api",
 ]
 
 osgi_jar_with_tests(