As a SRE/Cluster Admin I expect that the multi payload can be used the same way as a single arch payload for a single arch cluster when installing with openshift-install. Currently the openshift-install's default arch is set by the arch of the build container. Since the multi-payload has all 4 archs, the default arch is determined by the user's cpu arch when extracting the installer binary.

AC:

• Determine what the UX should be when using the multi-payload for a single arch install.