Updated openstack/openstack
Project: openstack-dev/devstack  daa0ce2f052eeeae2ee0b2dc1265279e4528f880
null
Use service role with glance service

glance just used to admin role for token validation,
the service role is sufficient for this.

glance also needs an user with enough permission to use swift,
so creating a dedictated service user for swift usage when s-proxy is
enabled.

Change-Id: I6df3905e5db35ea3421468ca1ee6d8de3271f8d1