Refactor buck external dependencies

Change-Id: Ia4b99493407eb7d4e893804cba6b944f758f085e
diff --git a/providers/pcep/tunnel/BUCK b/providers/pcep/tunnel/BUCK
index 465f5fd..8068326 100644
--- a/providers/pcep/tunnel/BUCK
+++ b/providers/pcep/tunnel/BUCK
@@ -1,5 +1,6 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
+    '//lib:NETTY',
     '//protocols/ovsdb/api:onos-protocols-ovsdb-api',
     '//protocols/ovsdb/rfc:onos-protocols-ovsdb-rfc',
     '//apps/pcep-api:onos-apps-pcep-api',
@@ -7,6 +8,7 @@
     '//protocols/pcep/pcepio:onos-protocols-pcep-pcepio',
     '//protocols/pcep/api:onos-protocols-pcep-api',
     '//protocols/pcep/ctl:onos-protocols-pcep-ctl',
+    '//lib:netty',
 ]
 
 TEST_DEPS = [