ansible script for setting up a Shib RPM mirror (was: Re: Package mirroring / Jisc)

[Cantor, Scott]

> This should be permanent going forward and we'll add mirrors as they come
> online, so it should work as we'd all expect. I will update the docs in the wiki
> as time permits.

An early tester found a missing package from the new mirror and that's been corrected along with the underlying cause. We'll also be clarifying, please just file bugs at https://issues.shibboleth.net if any problems with a mirror occur, so we can triage and reach out as needed, no need to pester the mirror owner as they probably aren't at fault (and unlike OBS, we actually care about the mirrors working, so we'll deal with it).

-- Scott