Refactor kubectl

Export pki utlitity functions

cluster/addons.go

@@ -4,8 +4,6 @@ import (
 	"fmt"
 
 	"github.com/Sirupsen/logrus"
-	"github.com/rancher/rke/k8s"
-	"github.com/rancher/rke/pki"
 )
 
 const (
@@ -20,17 +18,12 @@ func (c *Cluster) DeployK8sAddOns() error {
 
 func (c *Cluster) deployKubeDNS() error {
 	logrus.Infof("[plugins] Setting up KubeDNS")
-	deployerHost := c.ControlPlaneHosts[0]
-	kubectlCmd := []string{"apply -f /addons/kubedns*.yaml"}
 
-	env := []string{
-		fmt.Sprintf("%s=%s", pki.KubeAdminConfigENVName, c.Certificates[pki.KubeAdminCommonName].Config),
-		fmt.Sprintf("%s=%s", ClusterDNSServerIPEnvName, c.ClusterDNSServer),
-		fmt.Sprintf("%s=%s", ClusterDomainEnvName, c.ClusterDomain),
+	kubectlCmd := &KubectlCommand{
+		Cmd: []string{"apply -f /addons/kubedns*.yaml"},
 	}
-
 	logrus.Infof("[plugins] Executing the deploy command..")
-	err := k8s.RunKubectlCmd(deployerHost.DClient, deployerHost.Hostname, kubectlCmd, env)
+	err := c.RunKubectlCmd(kubectlCmd)
 	if err != nil {
 		return fmt.Errorf("Failed to run kubectl command: %v", err)
 	}