rhel platform: add a named crypto-policy support
RHEL 8+ provides bind system-wide crypto policy support, enable it.
Fixes: https://pagure.io/freeipa/issue/8925
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: Anuja More <amore@redhat.com>