Update README.md to reference the use of managed identities.

[BeatrizSilv]

Added note that references the use of managed identities.

Overview/Summary

Discussed the creation of the PR in this issue: #1473 (comment)

Replace this with a brief description of what this Pull Request fixes, changes, etc.

This PR fixes/adds/changes/removes

1. Replace me
2. Replace me
3. Replace me

Breaking Changes

1. Replace me
2. Replace me

Testing Evidence

Please provide any testing evidence to show that your Pull Request works/fixes as described and planned (include screenshots, if appropriate).

Testing URLs

The below URLs can be updated where the placeholders are, look for {YOUR GITHUB BRANCH NAME HERE - Remove Curly Brackets Also} & {YOUR GITHUB BRANCH NAME HERE - Remove Curly Brackets Also}, to allow you to test your portal deployment experience.

Please also replace the curly brackets on the placeholders {}

Azure Public

[](https://portal.azure.com/#blade/Microsoft_Azure_CreateUIDef/CustomDeploymentBlade/uri/https%3A%2F%2Fraw.githubusercontent.com%2F{YOUR GITHUB ORG/ACCOUNT HERE - Remove Curly Brackets Also}%2FEnterprise-Scale%2F{YOUR GITHUB BRANCH NAME HERE - Remove Curly Brackets Also}%2FeslzArm%2FeslzArm.json/uiFormDefinitionUri/https%3A%2F%2Fraw.githubusercontent.com%2F{YOUR GITHUB ORG/ACCOUNT HERE - Remove Curly Brackets Also}%2FEnterprise-Scale%2F{YOUR GITHUB BRANCH NAME HERE - Remove Curly Brackets Also}%2FeslzArm%2Feslz-portal.json)

Azure US Gov (Fairfax)

[](https://portal.azure.us/#blade/Microsoft_Azure_CreateUIDef/CustomDeploymentBlade/uri/https%3A%2F%2Fraw.githubusercontent.com%2F{YOUR GITHUB ORG/ACCOUNT HERE - Remove Curly Brackets Also}%2FEnterprise-Scale%2F{YOUR GITHUB BRANCH NAME HERE - Remove Curly Brackets Also}%2FeslzArm%2FeslzArm.json/uiFormDefinitionUri/https%3A%2F%2Fraw.githubusercontent.com%2F{YOUR GITHUB ORG/ACCOUNT HERE - Remove Curly Brackets Also}%2FEnterprise-Scale%2F{YOUR GITHUB BRANCH NAME HERE - Remove Curly Brackets Also}%2FeslzArm%2Ffairfaxeslz-portal.json)

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant issues, for tracking and closure.
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Ensured contribution guidance is followed.
• Updated relevant and associated documentation.
• Updated the "What's New?" wiki page (located: /docs/wiki/whats-new.md)

[BeatrizSilv]

@jtracey93 Thank you for the suggestion. Let me know if you agree with the changes I'm suggesting.

[BeatrizSilv]

#pr-ready