Previously we had enabled SSL on our main vhost for the mirrors. Do
similar for all of the proxy cache vhosts for docker and other external
resources.
As part of this change we improve the testing to ensure that the new
vhosts are working as expected. One testing specific change to note is
the testinfra node names did not match our existing system-config-run
job nodenames. This has been corrected.
Additionally RHRegistryMirror and QuayMirror may not be working and
fixing those is left as a followup.
Change-Id: I9dbbd4080c3a2cce4acc39d63244f7a645503553
79ff2afb87