Add function to get AWS platform and region

[cblecker]

No description provided.

[c-e-brumm]

With "kube-system" "cluster-config-v1" and "install-config" all as hardcoded strings is there a future where this pkg grows and we benefit from moving those to constants? If not that's fine.

[cblecker]

@c-e-brumm Good question! The cluster-config-v1 configmap is actually being deprecated and is removed completely in 4.2 (that's the reason for this PR). This allows the code to work under both a 4.1 and 4.2 scenario. As those hard coded strings all relate to 4.1 world, I don't think they would benefit from moving to constants.

[c-e-brumm]

/lgtm

[openshift-ci-robot]

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