Support Azure China?

[chongwang87]

I saw the AZURE_OIDC_TOKEN_URL hardcoded to login.microsoftonline.com. I assumed it only supports Azure Public Cloud for now. Do you have plans to roll out support Azure China Cloud?

Reference: https://pkg.go.dev/github.com/Azure/azure-sdk-for-go/sdk/azcore@v1.21.0/cloud#pkg-variables

[RobinDuhan]

@chongwang87 Thanks for raising this. I'll come back with more details on when we can add this support.