TODO cleanup: OSC_Config
TODO cleanup: OSC_Config

os-client-config is now at 1.22.0 in global-requirements, we can remove
this pw_func setting block as the pw_func arg to __init__() was added
in 1.21.0.

Change-Id: I5bbc3e3aae4f3e4c4333c73bba19bda65e0d8488

openstack/python-openstackclient,dtroyer/python-openstackclient,openstack/python-openstackclient,dtroyer/python-openstackclient