https://bugzilla.redhat.com/show_bug.cgi?id=1205912
Adds the following config parameters:
CONFIG_KEYSTONE_ADMIN_USERNAME - this is the username of the keystone
admin user - default 'admin'
CONFIG_KEYSTONE_ADMIN_EMAIL - this is the email address of the keystone
admin user - default 'root@localhost'
This will also change the keystonerc_admin to use
CONFIG_KEYSTONE_ADMIN_USERNAME as the OS_USERNAME
Fixes: rhbz#1205912
Change-Id: Ia9f7c261765bd097100538eee76df8cba4a33285