Merge pull request #9147 from cevich/v2.2.1-rhel

[v2.2.1-rhel] Cirrus: Upd. ext. service check host list

Author: openshift-merge-robot

contrib/cirrus/required_host_ports.txt

@@ -2,14 +2,3 @@ github.com 22
 docker.io 443
 quay.io 443
 registry.fedoraproject.org 443
-mirrors.fedoraproject.org 443
-dl.fedoraproject.org 443
-ewr.edge.kernel.org 443
-mirror.chpc.utah.edu 443
-mirror.clarkson.edu 443
-mirror.umd.edu 443
-mirror.vcu.edu 443
-mirrors.cat.pdx.edu 443
-pubmirror1.math.uh.edu 443
-pubmirror2.math.uh.edu 443
-sjc.edge.kernel.org 443