Stop the use of the admin_token and use the bootstrap process
to initialize Keystone instead. Fortunately the implementation
of the bootstrap process is both idempotent when it needs to be
and it can be safely called on an existing deployment.
Subsequently we can migrate by just removing the admin_token
from the configuration and create new credentials for use by
the charm with a call to ``keystone-manage bootstrap``.
Remove configuration templates for versions prior to Mitaka, by
doing this we need to move any configuration initially defined
prior to Miataka forward to the ``templates/mitaka`` folder.
A side effect of this migration is that newly bootstrapped
deployments will get their ``default`` domain created with a
literal ID of ``default``. Prior to this change third party
software making assumptions about that being the case may have
had issues.
Closes-Bug: #1859844
Closes-Bug: #1837113
Related-Bug: #1774733
Closes-Bug: #1648719
Closes-Bug: #1578678
Func-Test-Pr: https://github.com/openstack-charmers/zaza-openstack-tests/pull/191
Change-Id: I23940720c24527ee34149f035c3bdf9ff54812c9
