Added volume.Deleter interface and simple HostPath implementation

pkg/volume/testing.go

@@ -129,6 +129,10 @@ func (plugin *FakeVolumePlugin) NewRecycler(spec *Spec) (Recycler, error) {
 	return &fakeRecycler{"/attributesTransferredFromSpec"}, nil
 }
 
+func (plugin *FakeVolumePlugin) NewDeleter(spec *Spec) (Deleter, error) {
+	return &FakeDeleter{"/attributesTransferredFromSpec"}, nil
+}
+
 func (plugin *FakeVolumePlugin) GetAccessModes() []api.PersistentVolumeAccessMode {
 	return []api.PersistentVolumeAccessMode{}
 }
@@ -184,3 +188,16 @@ func NewFakeRecycler(spec *Spec, host VolumeHost, config VolumeConfig) (Recycler
 		path: spec.PersistentVolume.Spec.HostPath.Path,
 	}, nil
 }
+
+type FakeDeleter struct {
+	path string
+}
+
+func (fd *FakeDeleter) Delete() error {
+	// nil is success, else error
+	return nil
+}
+
+func (fd *FakeDeleter) GetPath() string {
+	return fd.path
+}