In order to demonstrate that OSA can be built without
any containers, and to validate on a continuous basis
that it still works, a new scenario is implemented to
test it.
As part of this, the following is done:
1. An example environment override file is added which
sets all the containers with 'is_metal: true' which
disables the container creation.
2. As haproxy is not used for the scenario on an AIO,
the haproxy environment configuration is broken out
from openstack_user_config into its own conf.d file
and the implementation of it into user space is added
to all other scenarios.
3. To ensure that the pip lockdown configuration is not
implemented by the pip install role when the repo
server doesn't exist yet, we ensure that the var is
set in the playbook that does the validation.
4. To ensure that rabbitmq is able to correctly start
up we implement the same host name on the host as
we do in the inventory. Without this rabbitmq fails.
In order to do this successfully with ansible, the
dbus package must be installed on the host, so it is
added as part of the AIO bootstrapping.
5. The workflow for a deployment needs no changes
because when the lxc-related playbooks execute, they
simply skip over because the lxc-related groups are
empty.
Depends-On: https://review.openstack.org/542307
Change-Id: I67199e1f35c91c4e2c9973e011e856c6ac3fb086
e09216aa4e