[Spring] Add addon configs & allowedOriginPatterns & restart for Spring Cloud Gateway

[ninpan-ms]

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• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally?

For new extensions:

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

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Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
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[azure-client-tools-bot-prd]

Hi @ninpan-ms,
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]

Spring

[zhoxing-ms]

Additionally, it is recommended to deprecate and hide the existing parameter --allowed-origins and replace it with a new parameter --allow-origins

It is recommended to keep the naming of parameter allowed_origins consistent with parameter allowed_origin_patterns

[ninpan-ms]

As talked offline, we will keep the name consistent with other parameters first, which is referenced from VMware's product Spring Cloud Gateway. Later will consider to deprecate those parameters together.

[azclibot]

[Release] Update index.json for extension [ spring ] : https://dev.azure.com/azclitools/internal/_build/results?buildId=65347&view=results