[FEAT] - PoC for Structured Authentication & remote cluster access

[IvoGoman]

Priority

Medium

User Story

No response

Description

This PoC should be used to proof that we can use StructuredAuthentication on a remote cluster to add the Central Greenhouse cluster as a provider for OIDC tokens.

Acceptance Criteria

• Proof this works to access a remote cluster
• Writeup of necessary steps to configure this on both ends
• Verify that this cannot be misused ( e.g. access cluster of another Org )
• Check if Central Cluster Auth(Dex) can be replaced by StructuredAuth + ClaimMappings

Reference Issues

#806

[IvoGoman]

StructuredAuth needs to be provided in a ConfigMap in the garden cluster and cannot be changed inside the Shoot Cluster on the fly.