change requirements line for pika to use git https clone, as many corporates' firewall blocks the port for git protocol.

Author: xiangjf

requirements.txt

@@ -11,7 +11,7 @@ newrelic==2.18.1.15
 nose==1.2.1
 nosexcover==1.0.7
 path.py==2.4.1
--e git://github.com/pika/pika.git@a731347fc0#egg=pika
+-e git+https://github.com/pika/pika.git@a731347fc0#egg=pika
 python-termstyle==0.1.10
 rednose==0.3
 requests==0.14.2