Adding CompatLogger object. #7225.

Signed-off-by: Nick Chappell <nick@intronic.org>

Merged from: https://github.com/Icinga/puppet-icinga2/pull/54

refs#7225: https://dev.icinga.org/issues/7225
CHANGELOG update.
Merge branch 'feature/compatlogger_object-7225' into develop

Merged from this PR: https://github.com/Icinga/puppet-icinga2/pull/54

refs# 7225: https://dev.icinga.org/issues/7225