Add IAM Roles for Service Accounts to nutanix-spec.md doc

[yannickstruyf3]

Issue #, if available:
N/A
Description of changes:
Update of the nutanix-spec.md to include "IAM Roles for Service Accounts" configuration

Testing (if applicable):
N/A

Documentation added/planned (if applicable):
Update of the nutanix-spec.md to include "IAM Roles for Service Accounts" configuration

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[eks-distro-bot]

Hi @yannickstruyf3. Thanks for your PR.

I'm waiting for a aws member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[abhay-krishna]

/lgtm
/approve
/ok-to-test
/cherrypick release-0.18

[eks-distro-pr-bot]

@abhay-krishna: once the present PR merges, I will cherry-pick it on top of release-0.18 in a new PR and assign it to you.

In response to this:

/lgtm
/approve
/ok-to-test
/cherrypick release-0.18

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[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhay-krishna

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• docs/OWNERS [abhay-krishna]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (025d06f) 71.63% compared to head (fd2b026) 71.64%.
Report is 45 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7285   +/-   ##
=======================================
  Coverage   71.63%   71.64%           
=======================================
  Files         556      556           
  Lines       43204    43204           
=======================================
+ Hits        30949    30952    +3     
+ Misses      10544    10542    -2     
+ Partials     1711     1710    -1     

☔ View full report in Codecov by Sentry.
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[eks-distro-pr-bot]

@abhay-krishna: new pull request created: #7338

In response to this:

/lgtm
/approve
/ok-to-test
/cherrypick release-0.18

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.