The enable-fips role has been refactored to support both centos/rhel and
Ubuntu.
In addition, for the Ubuntu tasks, a small role is added to enable a
Ubuntu Advantage subscription. This is required because Ubuntu requires
a subscription to enable FIPS. This role takes a subscription key as a
parameter (ubuntu_ua_token.token).
In Openstack, this is provided by the openstack-fips job in
openstack/project-config, which will be the base job for OpenStack jobs.
This job will provide the ubuntu_ua_token.token.
Change-Id: I47a31f680172b47584510adb672b68498a85bd32
99711abf23