Research different ways of obtaining version and architecture information from cluster nodes

[pmalek]

As of now the cluster version and architecture are gathered from the cluster using discovery's interface ServerVersion().

This only gets the information that is retrieved from the API. This wouldn't be accurate for heterogenous clusters with different versions of k8s, different architectures and/or in the middle of a cluster upgrade.

This might not be critical but will return inaccurate information which we don't want.

Initially brought up in the comment about a TODO: #12 (comment)