Package maintainers often use remote rule file gating.yml instead of gating.yaml, which is defined in the Greenwave server configuration, to add required test to gate their packages.

It would be a good idea to support the other file suffix if the URL template in configuration ends with one of them. I.e. if DIST_GIT_URL_TEMPLATE ends with .yaml and remote rule file is not found.

Alternatively, the fall back values could be explicitly specified in the configuration. E.g. with the new configuration option REMOTE_RULE_POLICIES:

REMOTE_RULE_POLICIES = {
    '*': [
        'https://src.fedoraproject.org/{pkg_namespace}{pkg_name}/raw/{rev}/f/gating.yaml',
        'https://src.fedoraproject.org/{pkg_namespace}{pkg_name}/raw/{rev}/f/gating.yml',
    ]
}