Instead of pulling upstream images, which are x86-specific, switch
to our own Akraino images with multiarch (x86_64 + AArch64) support:
- akraino/validation:sonobuoy-plugin-systemd-logs-latest
- akraino/validation:kube-conformance-v1.11
JIRA: VAL-24
Change-Id: I195e111350a95c8d198f73420a1b2ba76a8600f2 Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>