INI: Test INI_MS_DETECT non-exclusive behavior
This adds test cases for the non-exclusive behavior of INI_MS_DETECT.
Signed-off-by: Alexander Scheel <ascheel@redhat.com>
Reviewed-by: Michal Židek <mzidek@redhat.com>
Merges: https://pagure.io/SSSD/ding-libs/issue/3167