This module mostly works, but the config test command is incompatible with corosync version on el8. The env var is ignored, and it tries to check the actual config file, which will not exist on first run, or contain the old config when the file is to be updated (and so the wrong config gets validated).

A previous attempt to fix this in #484 is out of sync with main branch.

A replacement PR based off #484 which fixes the config sync and claims compatibility with el8 in metadata will follow.