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

Marx86/xqueue,EDUlib/xqueue,EDUlib/xqueue,Marx86/xqueue,edx/xqueue,nttks/xqueue,EDUlib/xqueue,knehez/xqueue,edx/xqueue,knehez/xqueue,edx/xqueue,knehez/xqueue,nttks/xqueue