Overlay and Multi-AZ for legacy Windows

[knabben]

What this PR does / why we need it

Adding multi-AZ MD spread for legacy Windows clusters

Which issue(s) this PR fixes

Fixes #4217

Describe testing done for PR

Release note

Additional information

Special notes for your reviewer

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/4215/20221222201441/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/4215/20221222204324/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/4215/20221222225458/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[codecov]

Codecov Report

Merging #4215 (4ec8d19) into main (a56516e) will decrease coverage by 0.88%.
The diff coverage is n/a.

❗ Current head 4ec8d19 differs from pull request most recent head adbaae2. Consider uploading reports for the commit adbaae2 to get more accurate results

@@            Coverage Diff             @@
##             main    #4215      +/-   ##
==========================================
- Coverage   49.31%   48.42%   -0.89%     
==========================================
  Files         450      480      +30     
  Lines       44577    46699    +2122     
==========================================
+ Hits        21982    22614     +632     
- Misses      20520    21960    +1440     
- Partials     2075     2125      +50     

Impacted Files	Coverage Δ
...in/cluster/get_machinehealthcheck_control_plane.go	11.11% <0.00%> (ø)
...in/cluster/set_machinehealthcheck_control_plane.go	21.21% <0.00%> (ø)
.../cli/plugin/cluster/get_machinehealthcheck_node.go	9.30% <0.00%> (ø)
cmd/cli/plugin/cluster/create.go	42.22% <0.00%> (ø)
cmd/cli/plugin/cluster/set_node_pool.go	14.63% <0.00%> (ø)
cmd/cli/plugin/isolated-cluster/test/main.go	0.00% <0.00%> (ø)
cmd/cli/plugin/cluster/upgrade.go	58.94% <0.00%> (ø)
cmd/cli/plugin/cluster/delete.go	12.50% <0.00%> (ø)
cmd/cli/plugin/cluster/set_machinehealthcheck.go	23.33% <0.00%> (ø)
cmd/cli/plugin/cluster/machinehealthcheck.go	100.00% <0.00%> (ø)
... and 22 more

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[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/4215/20221223003928/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/4215/20221223014011/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.