Imports k8s.io/kops/upup/pkg/api k8s.io/kops/upup/pkg/fi/utils k8s.io/kubernetes/pkg/util/validation/field k8s.io/kops/upup/pkg/fi/secrets k8s.io/kops/util/pkg/vfs k8s.io/kops/pkg/client/simple k8s.io/kops/upup/pkg/fi Standard library imports fmt os strings