The previous expression tested for RHEL or RHEL-like systems to use uglifyjs. Tighten that up to only RHEL 8 so future RHEL can use rjsmin. https://pagure.io/freeipa/issue/8669 Signed-off-by: Rob Crittenden <rcritten@redhat.com> Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>