[FEAT cloudctl] - bootstrap procedure

[uwe-mayer]

Priority

None

User Story

As a Greenhouse operator I need to bootstrap cloudctl, aka. I need first time connectivity to Greenhouse to be able to access all onboarded Clusters

Description

We need to provide a possibility for first Greenhouse cluster access

Desired Workflow

One single command to download and bootstrap:

1. Download Greenhouse kubeconfig from UI
   k config view --minify output
2. run

cloudctl bootstrap --greenhouse-kubeconfig=path-to-my-greenhouse-kubeconfig --greenhouse-org=sci

Description

We need to provide a possibility for first Greenhouse cluster access

Acceptance Criteria

• It is possible to access the Greenhouse api-server for cloudctl if the user has the correct permissions and groups in the upstream idp
• UI provides a download for org-scoped kubeconfig with OIDC
• with org-specific connector
• Provide default cloudctl bootstrap command that consumes a kubeconfig scoped to greenhouse

Reference Issues

cloudoperators/greenhouse#2186

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