EmailService - default Location global for email and domain create and sender username text and example update

[v-vprasannak]

---

This checklist is used to make sure that common guidelines for a pull request are followed.

Related command

General Guidelines

• [x] Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• [x] Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• [ ] My extension version conforms to the Extension version schema

For new extensions:

• [ ] My extension description/summary conforms to the Extension Summary Guidelines.

About Extension Publish

There is a pipeline to automatically build, upload and publish extension wheels.
Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
You only need to update the version information in file setup.py and historical information in file HISTORY.rst in your PR but do not modify src/index.json.

[azure-client-tools-bot-prd[bot]]

❌Azure CLI Extensions Breaking Change Test

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>

❌communication

> >|rule|cmd_name|rule_message|suggest_message| >|---|---|---|---| >|❌ [1008 - ParaPropAdd](https://github.com/Azure/azure-cli/blob/dev/doc/breaking_change_rules/1008.md) |communication email create|cmd `communication email create` update parameter `data_location`: added property `required=True`|please remove property `required=True` for parameter `data_location` of cmd `communication email create`| >|⚠️ [1008 - ParaPropAdd](https://github.com/Azure/azure-cli/blob/dev/doc/breaking_change_rules/1008.md)|communication email create|cmd `communication email create` update parameter `location`: added property `aaz_default=Global`|| >|⚠️ [1008 - ParaPropAdd](https://github.com/Azure/azure-cli/blob/dev/doc/breaking_change_rules/1008.md)|communication email create|cmd `communication email create` update parameter `location`: added property `default=Global`|| >|⚠️ [1008 - ParaPropAdd](https://github.com/Azure/azure-cli/blob/dev/doc/breaking_change_rules/1008.md)|communication email domain create|cmd `communication email domain create` update parameter `location`: added property `aaz_default=Global`|| >|⚠️ [1008 - ParaPropAdd](https://github.com/Azure/azure-cli/blob/dev/doc/breaking_change_rules/1008.md)|communication email domain create|cmd `communication email domain create` update parameter `location`: added property `default=Global`|| > >

[azure-client-tools-bot-prd[bot]]

Hi @v-vprasannak, Please write the description of changes which can be perceived by customers into HISTORY.rst. If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[github-actions[bot]]

:warning: Release Suggestions

Module: communication

• Update VERSION to 2.0.0 in src/communication/setup.py

  Notes

• Stable/preview tag is inherited from last release. If needed, please add stable/preview label to modify it.
• Major/minor/patch/pre increment of version number is calculated by pull request code changes automatically. If needed, please add major/minor/patch/pre label to adjust it.
• For more info about extension versioning, please refer to Extension version schema

[azclibot]

[Release] Update index.json for extension [ communication ] : https://dev.azure.com/azclitools/release/_build/results?buildId=165504&view=results