Update docs for provider support of optional configurations

[taneyland]

Issue #, if available:

Description of changes:
Added a provider support matrix for optional configurations + update the supported optional configs on the provider-specific pages

Testing (if applicable):

Documentation added/planned (if applicable):

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (96f3aae) 71.34% compared to head (db00c2a) 71.34%.
Report is 9 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6538   +/-   ##
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  Coverage   71.34%   71.34%           
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  Files         544      544           
  Lines       41963    41963           
=======================================
  Hits        29940    29940           
  Misses      10345    10345           
  Partials     1678     1678           

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[vivek-koppuru]

This is great!

[chrisnegus]

/lgtm

[taneyland]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: taneyland

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[drewvanstone]

I think all these relative links can be done with [a relative link](other_file.md) instead.

[g-gaston]

removing approve bc prow seems to be waiting for this PR and it won't merge until requested changes are resolved
@taneyland re-approve when you are ready

/remove-approve

[abhay-krishna]

/approve cancel

[eks-distro-bot]

New changes are detected. LGTM label has been removed.

[taneyland]

I think all these relative links can be done with [a relative link](other_file.md) instead.

Talked to @chrisnegus on what's the recommended way to reference other pages. The reason we try to use relref or ref for internal references to the docs is because Hugo will test the link and fail to build the page if it does not exist. This helps us to avoid broken links.

[chrisnegus]

/lgtm

The reason we try to use relref or ref for internal references to the docs is because Hugo will test the link and fail to build the page if it does not exist. This helps us to avoid broken links.

[taneyland]

/cherrypick release-0.18

[eks-distro-pr-bot]

@taneyland: new pull request created: #7329

In response to this:

/cherrypick release-0.18

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