Update CIAM automation test for MSIDLABCIAM6

[fidelianawar]

Proposed changes

CIAM has new lab tenant - MSIDLABCIAM6 to support CUD (custom URL domains). Updating automation test to point to new labs API

Type of change

• [X] Feature work
• [ ] Bug fix
• [ ] Documentation
• [ ] Engineering change
• [ ] Test
• [ ] Logging/Telemetry

Risk

• [ ] High – Errors could cause MAJOR regression of many scenarios. (Example: new large features or high level infrastructure changes)
• [ ] Medium – Errors could cause regression of 1 or more scenarios. (Example: somewhat complex bug fixes, small new features)
• [X] Small – No issues are expected. (Example: Very small bug fixes, string changes, or configuration settings changes)

Additional information