openstack/openstack-ansible-os_cloudkitty - openstack-ansible-os_cloudkitty - OpenDev: Free Software Needs Free Tools

This removes the systemd service templates and tasks from this role and
leverages a common systemd service role instead. This change removes a
lot of code duplication across all roles all without sacrificing features
or functionality. The intention of this change is to ensure uniformity and
reduce the maintenance burden on the community when sweeping changes are
needed.
The systemd journal would normally be populated with the standard out of
a service however with the use of uwsgi this is not actually happening
resulting in us only capturing the logs from the uwsgi process instead
of the service itself. This change implements journal logging in the
service config, which is part of OSLO logging.
OSLO logging docs found here: <https://docs.openstack.org/oslo.log/3.28.1/journal.html>
Change-Id: Ieff0119cb09e8971fab5b0393f023010a554edff
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

Change-Id: I4bd223a3f5fbd36839e8b79103994ba4a7122fd8

In order to make it easier to differentiate between the lists of
python packages, distribution packages, downloaded packages,
package pins and other similar variables the variable names are
being changed to ensure that they have a more explicit suffix
that defines the purpose and makes the naming more consistent.
This is to facilitate a lookup plugin which will be able to look
up all the package lists and present them as a consolidated piece
of data which may be used for artifact preparation.
Change-Id: Ie416ef490b4e50b57bc3db870e1cb5540df6446e

This change implements support for Xenial and CentOS 7 within the
os_cloudkitty role.
Change-Id: Id2abe9099171080bd3d3ceb3a54222a5dfdefe2f
Implements: blueprint multi-platform-host