[bug] Fail to run unit test for v1alpha2 in kubenetes 1.12+

[gaocegege]

/kind bug

What steps did you take and what happened:
[A clear and concise description of what the bug is.]

What did you expect to happen:

Ref kubernetes-sigs/controller-runtime#318

We cannot run the test with kubernetes 1.12+

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Kubeflow version:
• Minikube version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):

[johnugeorge]

Unit tests are consisently passing now

[johnugeorge]

Closing the issue as it is no more valid