TE Topoplogy subsystem I2RS API changes

This submission contains the following:

1. Major changes in apps/tetopology. The changes are mainly introduced
   to support new searching keys in TE Topology.

2. Add RESTCONF notification support in the TE Provider. i.e., for
   south-bound RESTCONF communication with the domain controller.

Change-Id: I6786959deb66c98626edc65ff52694dcf08981a3
diff --git a/apps/tetopology/api/BUCK b/apps/tetopology/api/BUCK
new file mode 100644
index 0000000..2b27800
--- /dev/null
+++ b/apps/tetopology/api/BUCK
@@ -0,0 +1,7 @@
+COMPILE_DEPS = [
+    '//lib:CORE_DEPS',
+]
+
+osgi_jar_with_tests (
+    deps = COMPILE_DEPS,
+)