CA: update Azure VM instance types

[mboersma]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Updates the list of known Azure VM SKUs (sizes) that cluster-autoscaler can work with. Adds Standard_E16s_v6, for example.

Which issue(s) this PR fixes:

Fixes #8510

Special notes for your reviewer:

Running go generate ./cloudprovider/azure/... produced a large number of deleted SKUs as well, but I reworked it to only append the new entries because that seems safer. Interesting to note that a few entries had the count of CPUs or GPUs updated.

Update Azure VM instance types

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mboersma
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