Skip the ACME mod_md test when the client is in enforcing mode
mod_md requires its own SELinux policy which is only available
in the upstream github. It is beyond the scope of this test to
maintain SELinux policy only for the scenario so skip it
if the client is in enforcing.
Note that no check needs to be done on OS because that is
already handled by the outer skipif for skip_mod_md_tests.
Signed-off-by: Rob Crittenden <email@example.com>
Reviewed-By: Alexander Bokovoy <firstname.lastname@example.org>