[Feature Request] MI Add support for Object / Principal ID in UAMI

[gladjohn]

Is your feature request related to a problem? Please describe.
Azure Redis team seems to be using PrincipalID. Need to add support in MSAL

Describe the solution you'd like
Add support for ObjectID in UAMI

Describe alternatives you've considered
none

Additional context
Please also evaluate if we need to add object id

Work Involved:

• Code update
• Unit test updates
• Integration test updates
• Sample updates
• Doc updates

[bgavrilMS]

Seems like it should be easy to add, let's prioritize it for the next release?

[bgavrilMS]

Why do they need principal ID instead of client id?

[gladjohn]

Why do they need principal ID instead of client id?

looks like they don't. But both app service and IMDS sources support object_id and principal_id in the token request. Do we want to add support?

[ragdev06]

object_id is one of the supported parameters for calling IMDS Token endpoint, there are around 95k token requests with object_id parameter in production right now. So please add object_id as one of the acceptable parameters.

[gautamdsheth]

object_id would also be really great to have in MSAL.

The thing is, Azure Automation requires it as well.

The principal_id is an alias of object_id, but does not work on Azure Automation at the time of writing, while object_id works on both.

[gladjohn]

Moving to triage for a recommendation based on the above discussions

[bgavrilMS]

We should be able to take this in our next release. Is it a lot of work?