Updates to the project to start using the new CNCF owned AWS account
for publishing AMIs. The code has had the old VMWare account removed
and the new account ID added. Additionally the docs have been updated
including clarifying that the public AMIs should only be used for
non-production usage.

Signed-off-by: Richard Case <[email protected]>

This make changes to the developer and user documentation. And also
updates the k8s version used in the e2e test to a version where we have
an AMI available.

Signed-off-by: Richard Case <[email protected]>

This updates the kubernetes versions used in the e2e tests to use k8s
versions that we AMIs for. It also marks some of the old CSI tests as
pending and some upgrade tests as pending (which will be re-enabled
at a later time).

A few minor docs updates have been made as a result of review.

Signed-off-by: Richard Case <[email protected]>