Verify that, given a set of ZTP cluster-manifests generated from a SiteConfig, we can read them and generate an agent ISO to create the same cluster.

(Note that this may still require some additional config for things that are not configured per-cluster in ZTP - e.g. mirror configuration - and that is fine. Also, it is expected that data attached to the BareMetalHost resources, such as per-host ignition overrides, is ignored.)

This might also be an opportunity to reduce any cosmetic differences (e.g. names, labels) between the cluster-manifests that the agent installer generates from an install-config and those that are generated from a SiteConfig.

The code to generate the ZTP manifests from a SiteConfig is here: https://github.com/openshift-kni/cnf-features-deploy/blob/4c3296309d16cd758bc98d4535702e797e60b06d/ztp/siteconfig-generator/siteConfig/siteConfigBuilder.go#L103