e2e test always fails

[ycyaoxdu]

unjoin command cannot remove klusterlet in time. It happened several times.
Error: klusterlet still exists

[ycyaoxdu]

/kind bug

[ycyaoxdu]

maybe we can collect e2e fails under this issue and then discuss whether the issue is e2e bug.

[ycyaoxdu]

Error: cluster manager still exists

---

fixed: #288

[ycyaoxdu]

Error: no matches for kind "Klusterlet" in version "operator.open-cluster-management.io/v1"

---

FIXED: #276 #282

[ycyaoxdu]

panic: test timed out after 30m0s
we can set time out period longer to avoid this

---

FIXED: #288

[ycyaoxdu]

Error: fail to update hubAccpetClient field for cluster clusteradm-e2e-test-c1: managedclusters.cluster.open-cluster-management.io "clusteradm-e2e-test-c1" not found

[ycyaoxdu]

Error: timed out waiting for the condition

another：
Error: timed out waiting for the condition

[ycyaoxdu]

Error: "join/bootstrap_hub_kubeconfig.yaml" (string): secrets "bootstrap-hub-kubeconfig" is forbidden: unable to create new content in namespace open-cluster-management-agent because it is being terminated

[ycyaoxdu]

2022/08/22 02:32:35 Cluster Manager resource should be deleted firstly.

[ycyaoxdu]

Error: hub already initialized

causing Error: token is missing

[ycyaoxdu]

2022/08/17 07:01:34 the server could not find the requested resource (get appliedmanifestworks.work.open-cluster-management.io)

2022/08/15 01:54:59 Other resources have been deleted.