Bug 1253021 - Update amqp from 1.4.8 to 1.4.9

https://github.com/celery/py-amqp/blob/master/Changelog
https://github.com/celery/py-amqp/compare/v1.4.8...v1.4.9

requirements/common.txt

@@ -27,7 +27,7 @@ billiard==3.3.0.22 --hash=sha256:d216181387317f8696c6d1c80a2491258d037493c1f0c6e
 pytz==2015.7 --hash=sha256:3ede470d3d17ba3c07638dfa0d10452bc1b6e5ad326127a65ba77e6aaeb11bec
 
 # Required by kombu
-amqp==1.4.8 --hash=sha256:94d2a68227e7984bd40f5f71c6839730622aff8a4633f29ede1ffdd0d240795e
+amqp==1.4.9 --hash=sha256:e0ed0ce6b8ffe5690a2e856c7908dc557e0e605283d6885dd1361d79f2928908
 anyjson==0.3.3 --hash=sha256:37812d863c9ad3e35c0734c42e0bf0320ce8c3bed82cd20ad54cb34d158157ba
 
 # Required by mozlog