KInldy provide more examples for self-hosted cluster

[santoshv98]

Great work but need working examples configurations for self-hosted K#S clusters:3

1. In case we are on k3s, how do we configure to use a storage bucket from GCS or S3? I see references to jx-requirements.yaml's storage section, but how does auth work in that case without the cluster itself running on GKE?
2. How do we use Minio? Lets say we configured minio backed by GCS, how does one authenticate with Minio?