[FEAT] - e2e test for Cluster Bootstrap

[IvoGoman]

Priority

(Medium) I'm annoyed but I'll live

Description

This test ensures that:

• remote cluster can be onboarded
  • differentiate on USE_EXISTING_CLUSTER:
    • false: spin Up "remote" envtest controlplane to test against as in this example
    • true: test against remote cluster specified by kubeconfig located at TEST_REMOTE_KUBECONFIG
      • Testrunner can decide wether to run against local KIND or existing cluster
• cluster status is reconciled, see status_controller.go
  • Namely: kubeConfigValidCondition, allNodesReadyCondition, readyCondition,
• expected resources are present on the remote cluster, mainly see direct_access_controller.go
  • Cluster resource present on central Greenhouse Cluster
  • Namespace in remote Cluster
  • SA in remote Cluster
  • ClusterRoleBinding for SA in remote Cluster
  • ServiceAccountToken