Add TAPI object resolver and DCS-dependent data provider ( to update cache )

- refactor TapiInstanceBuilder and add some util method
- add skeleton code for tapi-common get RPCs

Change-Id: I548623ad29f9b72b425713720c5081d790b42bd2
diff --git a/apps/odtn/api/BUCK b/apps/odtn/api/BUCK
index c3cdf13..0c5811f 100644
--- a/apps/odtn/api/BUCK
+++ b/apps/odtn/api/BUCK
@@ -6,6 +6,7 @@
     '//models/tapi:onos-models-tapi',
     '//models/openconfig:onos-models-openconfig',
     '//apps/yang:onos-apps-yang',
+    '//apps/config:onos-apps-config',
 ]
 
 TEST_DEPS = [