Fix compatibility with previous versions by making sure all the uploads
and plugins end up in the correct directory. Add a test for the exact
path we care about to ensure that it doesn't work "on accident."
Discovered while updating instances to unstable.
There was a systemd-tmpfiles warning about not being able to remove the
'plugins' directory. Squash this warning through removal of unnecessary
systemd-tmpfiles options, and write a test for it.
Add the {option}`services.mattermost.pluginsBundle` option to allow
overriding the plugin directory and also using it for tests. Update
wording in option documentation so it is more clear.
Use formats.json instead of builtins.toJSON so module merging works.
Make the tests go faster by pipelining shutdowns of nodes.
Now that we are disabling telemetry by default, we should attempt to
override it and other options in existing mutable configs,
if the user had a mutable config and advances their system.stateVersion.
We should disable telemetry but enable security update checks. Make both
controlable in the module without digging into settings.
Disabling telemetry also makes NixOS tests faster because the server
tries to send telemetry on first start.
Based on #198040. Prioritizes backwards compatibility, including
database and plugin compatibility, while adding more sensible
defaults like database peer authentication.
Expand the scope of tests to include plugins (including building
from source) and testing that a piece of media uploads and downloads
to make sure the storage directory doesn't vanish.
