Draft: Make CLOUD_CONNECTOR_BASE_URL a development setting

What does this MR do and why?

Make CLOUD_CONNECTOR_BASE_URL a development setting

This helps addressing conflicts in setting up development scenarios between testing SHM and Cloud Connector use cases with a local AIGW instance.

See !199262 (comment 2658506327)

References

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Before	After

How to set up and validate locally

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