Add copyright notice to zephyr mirroring bots.

(imported from commit f3d27a032a461cf3eb92822feee3f8e790d630dd)

bots/zephyr_mirror.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# Copyright (C) 2012 Humbug, Inc.  All rights reserved.
 import sys
 import traceback
 import simplejson

common.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# Copyright (C) 2012 Humbug, Inc.  All rights reserved.
 import simplejson
 import requests
 import time