Fixing windows node overlay template apply

[knabben]

What this PR does / why we need it:
Finalizing the template conditional for windows feature flag and avoid applying unnecessary CRDs

Which issue(s) this PR fixes:

Fixes #

Describe testing done for PR:
Run a new cluster upgrade, metadata/tkg should be applied to the workload cluster.

Special notes for your reviewer:

Release note:

NONE

New PR Checklist

• Ensure PR contains only public links or terms
• Use good commit messages
• Squash the commits in this branch before merge to preserve our git history
• If this PR is just an idea or POC, use a Draft PR instead of a full PR
• Add appropriate kind label according to what type of issue is being addressed.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/778/20211005222956/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/778/20211005230136/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/778/20211005230354/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.

[anujc25]

LGTM