Stop updating /etc/rkt/net.d config files

We have now removed rkt, should be enough with cni

Author: afbjorklund

pkg/minikube/bootstrapper/kubeadm/default_cni.go

@@ -19,7 +19,7 @@ package kubeadm
 // defaultCNIConfig is the CNI config which is provisioned when --enable-default-cni
 // has been passed to `minikube start`.
 //
-// The config is being written to /etc/cni/net.d/k8s.conf and /etc/rkt/net.d/k8s.conf.
+// The config is being written to /etc/cni/net.d/k8s.conf.
 const defaultCNIConfig = `
 {
   "name": "rkt.kubernetes.io",

pkg/minikube/bootstrapper/kubeadm/kubeadm.go

@@ -634,8 +634,7 @@ func copyConfig(cfg config.KubernetesConfig, files []assets.CopyableFile, kubead
 	// and minikube was started with "--extra-config=kubelet.network-plugin=cni".
 	if cfg.EnableDefaultCNI {
 		files = append(files,
-			assets.NewMemoryAssetTarget([]byte(defaultCNIConfig), constants.DefaultCNIConfigPath, "0644"),
-			assets.NewMemoryAssetTarget([]byte(defaultCNIConfig), constants.DefaultRktNetConfigPath, "0644"))
+			assets.NewMemoryAssetTarget([]byte(defaultCNIConfig), constants.DefaultCNIConfigPath, "0644"))
 	}
 
 	return files

pkg/minikube/constants/constants.go

@@ -199,8 +199,6 @@ const (
 	KubeadmConfigFile = "/var/lib/kubeadm.yaml"
 	// DefaultCNIConfigPath is the path to the CNI configuration
 	DefaultCNIConfigPath = "/etc/cni/net.d/k8s.conf"
-	// DefaultRktNetConfigPath is the path to the rkt net configuration
-	DefaultRktNetConfigPath = "/etc/rkt/net.d/k8s.conf"
 )
 
 const (