Openstack services global overriding config not documented

[Bertrand Lallau]

Actually Openstack services configuration can be overriden using many
files:

- /etc/kolla/config/<< service name >>/<< config file >>
- /etc/kolla/config/<< service name >>/<<host>>/<< config file >>
- /etc/kolla/config/global.conf
- /etc/kolla/config/database.conf
- /etc/kolla/config/messaging.conf

Only per-service configuration is actually documented here:
https://github.com/openstack/kolla-ansible/blob/master/doc/advanced-configuration.rst#L164

All of the following config files are not documented, and so, logicaly not used:
- /etc/kolla/config/global.conf
- /etc/kolla/config/database.conf
- /etc/kolla/config/messaging.conf

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/456688

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/456688
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=a3dfdfc085d406c8a508c3a79acb4ef2872dbc02
Submitter: Jenkins
Branch: master

commit a3dfdfc085d406c8a508c3a79acb4ef2872dbc02
Author: Bertrand Lallau <email address hidden>
Date: Thu Apr 13 17:38:12 2017 +0200

    Simplify Openstack services configuration possibilities

    Actually Openstack services configuration can be overriden using many
    files:
    - /etc/kolla/config/<< service name >>/<< config file >>
    - /etc/kolla/config/<< service name >>/<<host>>/<< config file >>
    - /etc/kolla/config/global.conf
    - /etc/kolla/config/database.conf
    - /etc/kolla/config/messaging.conf

    Only per-service configuration is actually documented here:
    https://github.com/openstack/kolla-ansible/blob/master/doc/advanced-configuration.rst#L164

    Allowing to globally modify service configuration can be perform too,
    but it can be done in 3 different manners, all not documented:
    - /etc/kolla/config/global.conf
    - /etc/kolla/config/database.conf
    - /etc/kolla/config/messaging.conf

    database.conf and messaging.conf seems redundant with global.conf.
    In order to simplify codebase it seems logical to remove them.

    Documentation has been added for overriding configuration globally and
    release note has been added too.

    Closes-Bug: #1682479
    Change-Id: I5d922dfc0d938173bad34ac64e490b78db1b7e31

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 6.0.0.0b2 development milestone.