Add license headers and .gitreview file

Change-Id: Ia658a979c73175948944d249641e455cdb90c2a8
diff --git a/adapters/interface.py b/adapters/interface.py
index 860c8ba..d1ac455 100644
--- a/adapters/interface.py
+++ b/adapters/interface.py
@@ -767,4 +767,4 @@
     #     :param packet: the actual packet; can be a serialized string or a
     #     scapy Packet.
     #     :return: None returned on success
-    #     """
\ No newline at end of file
+    #     """