Match global requirements
Match global requirements

Add the argparse and six modules.

Change-Id: I0b41587bec8a8b82a44295baf5693e530097d846

openstack/congress,ekcs/congress,ekcs/congress,ramineni/my_congress,ramineni/my_congress,ekcs/congress,ramineni/my_congress,ramineni/my_congress,ekcs/congress,openstack/congress