Imports
- github.com/jetstack/cert-manager/pkg/util/errors
- github.com/jetstack/cert-manager/pkg/util/pki
- k8s.io/api/batch/v1
- k8s.io/api/core/v1
- k8s.io/api/extensions/v1beta1
- k8s.io/apimachinery/pkg/api/errors
- k8s.io/client-go/kubernetes
- k8s.io/client-go/listers/core/v1
- k8s.io/client-go/rest
- k8s.io/client-go/tools/clientcmd