openSUSE admin

The new machine behind https://openqa.opensuse.org/ has 128 GBB RAM and a 3.6 TB RAID system, allowing to run all tests in tmpfs (RAM) and to store the test results for a very long time.

As always, we used the chance to move the web frontend behind our HA-Proxy, which allows us to provide you immediately with a "service down" page and (hopefully more important) to scale up to many more "backends" once the amount of users trying to see the latest results is increasing over the limit one single machine can handle.