Move to git+https:// for requirements (#6527)

Author: nateprewitt

requirements.txt

@@ -1,5 +1,5 @@
 # botocore and the awscli packages are typically developed
 # in tandem, so we're requiring the latest develop
 # branch of botocore and s3transfer when working on the awscli.
--e git://github.com/boto/botocore.git@develop#egg=botocore
--e git://github.com/boto/s3transfer.git@develop#egg=s3transfer
+-e git+https://github.com/boto/botocore.git@develop#egg=botocore
+-e git+https://github.com/boto/s3transfer.git@develop#egg=s3transfer