[release-1.18] Tiltfile aks as mgmt improvements

[k8s-infra-cherrypick-robot]

This is an automated cherry-pick of #5451

/assign nawazkh

Update Tiltfile and add documentation on using AKS as mgmt cluster

[nawazkh]

Will approve post tests.
/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: fcf4bd183942d016e2af062f41519555e197122a

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.42%. Comparing base (929741a) to head (1c28e12).
Report is 7 commits behind head on release-1.18.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.18    #5463   +/-   ##
=============================================
  Coverage         52.42%   52.42%           
=============================================
  Files               272      272           
  Lines             29365    29365           
=============================================
  Hits              15394    15394           
  Misses            13165    13165           
  Partials            806      806           

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[nawazkh]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nawazkh

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