Updated openstack/openstack
Project: openstack/python-keystoneclient  10726437d0f047cc54bf10c2a2e9b15b5b0f66a5

Mark auth plugin options as secret

By marking the options as secret they don't get printed out in things
like the debug log when loading the application.

Change-Id: Iadab479a896bc4b1682ee8d207cc50a01dca8255