Allow for openshift OAuth/OIDC login to authenticate against current cluster

[tumido]

Additional context

Backstage needs a mechanism to provide per-user token for openshift interactions/permission and identity delegation.

Acceptance Criteria

• User can login and backstage obtains: token and user identity

Relevant links

No response

[sesheta]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[SamoKopecky]

/remove-lifecycle stale

[sesheta]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

/lifecycle stale