security: silence subjectAltName warning
security: silence subjectAltName warning

Now that we verify security by default, this subjectAltName warning
occurs frequently for errata.devel.redhat.com. Silence it.

I've requested RH eng-ops generate a new one so we can remove this hack.

ktdreyer/errata-tool,red-hat-storage/errata-tool,ktdreyer/errata-tool,mmuzila/errata-tool,red-hat-storage/errata-tool,mmuzila/errata-tool