Description of problem: The new architectures of aarch64 and ppc64le were missing mappings to the virtualization_host_platform entitlement, making it impossible to give that entitlement to a server of one of those arches.
Committing to Spacewalk master: 53f5b22d134451e84c7feabfeeb9cf9e25e7ff34
Moving bugs to ON_QA as we move to release Spacewalk 2.3
Spacewalk 2.3 has been released. See https://fedorahosted.org/spacewalk/wiki/ReleaseNotes23