Refactor acceptance tests

[jay7x]

No description provided.

[jay7x]

Tested this on:

• Ubuntu 22.04, 24.04
• Debian 11, 12, 13 (See NOTE below)
• Rocky 9
• AlmaLinux 9
• OracleLinux 8, 9

It doesn't work on RHEL10-alikes by 2 reasons:

1. There is no support for RHEL-10 in the upstream repo (http://rpms.adiscon.com/v8-stable has no rhel-10 yet)
2. There is either bug or feature that breaks wipe_rsyslog() helper: https://gist.github.com/jay7x/e22bad9544eef71fcf28866921f29b75. Though, I'll workaround this later.

NOTE: Debian is in a gray area at the moment. There are no official upstream builds of recent rsyslog version. There is OBS repo that has 8.2512 as latest version. I'm not sure if we should support that or wait for any clarification on Debian status (See rsyslog/rsyslog#6767). So far upstream repo is not enabled and the corresponding acceptance test is skipped.

[jay7x]

One dropped part is a test with keeping existing OS rsyslog config. I have mixed feelings here. My idea is that we're testing the module, not the OS. I'd prefer maybe to introduce OS-specific default configs instead.

[kenyon]

Looks good so far 👍