ppc64le is a new architecture, we need to add it to the three places we have hardcoded arch listings: beaker-wizard, testinfo.py in rhts, testinfo.py in beaker.
It wouldn't hurt to add it to beaker-init as well (the ARM-related arches are probably missing from there, we can add them too).
beaker changes: http://gerrit.beaker-project.org/#/c/3224/
Beaker 0.17.3 has been released (https://beaker-project.org/docs/whats-new/release-0.17.html#beaker-0-17-3)
rhts-devel-4.63-1 has been released and is available from https://beaker-project.org/yum/