BFD: command line interface

Implement command line interface to the BFD binary APIs. Add
corresponding unit tests.

Change-Id: Ia0542d0bc4c8d78e6f7b777a08fd94ebfe4d524f
Signed-off-by: Klement Sekera <ksekera@cisco.com>
diff --git a/test/vpp_object.py b/test/vpp_object.py
index 0d74baa..61a96ec 100644
--- a/test/vpp_object.py
+++ b/test/vpp_object.py
@@ -46,6 +46,7 @@
         if obj.object_id() not in self._object_dict:
             self._object_registry.append(obj)
             self._object_dict[obj.object_id()] = obj
+            logger.debug("REG: registering %s" % obj)
         else:
             logger.debug("REG: duplicate add, ignoring (%s)" % obj)