k8s-v1.18-v1

For k8s v1.18.12 at the end of 2020.

k8s-v1.9-v2

Update something for k8s v1.9.6 at the end of 2020.

k8s-v1.8-v2

Update something for k8s v1.8 at the end of 2020.

k8s-v1.9-v1

Upgrade for k8s v1.9.6

k8s-v1.8-v1

Support basic features:

1. create a sample crd
2. create a sample crd controller