{Core} Add US Gov cloud endpoint for synapse

[aim-for-better]

Description

• Add US Gov cloud endpoint for synapse
• Modify the resource id for synapse in mooncake

Testing Guide

History Notes

[Component Name 1] BREAKING CHANGE: az command a: Make some customer-facing breaking change.
[Component Name 2] az command b: Add some customer-facing feature.

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[aim-for-better]

Hi @haroldrandom , The CI failed in "Test Extensions Loading Python36" step, from the logs
Request to https://azurecliprod.blob.core.windows.net/cli-extensions/stack_hci-0.1.1-py3-none-any.whl failed with 500
we can see that it is due to storage issue, could you please double check and fix this?

[jiasli]

This is a known issue. I have re-run the task. But still, we'd better find a permanent solution.

[aim-for-better]

This is a known issue. I have re-run the task. But still, we'd better find a permanent solution.

Thanks~