TESTS: Add a multihost test for changing sssd-kcm debug level by just restarting the KCM service
Related:
https://pagure.io/SSSD/sssd/issue/3862
Adds a test for the previous patches to make sure just restarting
sssd-kcm with changes to the [kcm] section applies the configuration
options from the kcm section.
Reviewed-by: Michal Židek <mzidek@redhat.com>