Merge pull request #65549 from gnufied/fix-flexvolume-containers

Automatic merge from submit-queue (batch tested with PRs 65456, 65549). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix flexvolume in containerized kubelets

Fixes flex volumes in containerized kubelets.

cc @jsafrane @chakri-nelluri @verult 

Note to reviewers : e2e tests pass in local containarized cluster. 

```release-note
Fix flexvolume in containarized kubelets
```

cmd/kube-controller-manager/app/BUILD

@@ -127,6 +127,7 @@ go_library(
         "//staging/src/k8s.io/metrics/pkg/client/external_metrics:go_default_library",
         "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/spf13/cobra:go_default_library",
+        "//vendor/k8s.io/utils/exec:go_default_library",
     ],
 )
 

cmd/kube-controller-manager/app/plugins.go

@@ -26,6 +26,7 @@ import (
 	// Cloud providers
 	"k8s.io/kubernetes/pkg/apis/componentconfig"
 	_ "k8s.io/kubernetes/pkg/cloudprovider/providers"
+	"k8s.io/utils/exec"
 
 	// Volume plugins
 	"github.com/golang/glog"
@@ -87,7 +88,7 @@ func ProbeAttachableVolumePlugins() []volume.VolumePlugin {
 // for the attach/detach controller.
 // Currently only Flexvolume plugins are dynamically discoverable.
 func GetDynamicPluginProber(config componentconfig.VolumeConfiguration) volume.DynamicPluginProber {
-	return flexvolume.GetDynamicPluginProber(config.FlexVolumePluginDir)
+	return flexvolume.GetDynamicPluginProber(config.FlexVolumePluginDir, exec.New() /*exec.Interface*/)
 }
 
 // ProbeExpandableVolumePlugins returns volume plugins which are expandable