feat: use tokens in BmcCredentials API

[yoks]

Is this a new feature, an enhancement, or a change to existing functionality?

New Feature

How would you describe the priority of this feature request

Medium

Please provide a clear description of problem this feature solves

GetBmcCredentials should be able to return SessionToken if available

Feature Description

Request to GetBmcCredential would return SessionToken instead of Basic credential if BMC supports it

Describe your ideal solution

No response

Describe any alternatives you have considered

No response

Additional context

Parrent Epic - #460

Code of Conduct

• I agree to follow NVIDIA Infra Controller's Code of Conduct
• I have searched the open feature requests and have found no duplicates for this feature request

[AlexGridnev]

I'm reverting it back to Verify as no sign of QA was done here.

@ajf FYI

[yoks]

This was running for quite a while, so i closed it as i split the issue (maybe should have been task?).

But if you want to verify it, you will need valid spiffe identifier, as this API would not mint token without it.