Add breadcrumb logs to demonstrate when minikube's CSI provisioner is actively making volumes

Since minikube is the canonical kubernetes deployment for learning and playing with things, this trivial PR makes it easy to see the storage provisioner in action, the current logging shows very little easier to differentiate how volumes are spun up.

pkg/storage/storage_provisioner.go

@@ -55,6 +55,8 @@ var _ controller.Provisioner = &hostPathProvisioner{}
 
 // Provision creates a storage asset and returns a PV object representing it.
 func (p *hostPathProvisioner) Provision(options controller.VolumeOptions) (*v1.PersistentVolume, error) {
+	glog.Infof("Provisioning volume %v", options)
+
 	path := path.Join(p.pvDir, options.PVName)
 
 	if err := os.MkdirAll(path, 0777); err != nil {
@@ -93,6 +95,7 @@ func (p *hostPathProvisioner) Provision(options controller.VolumeOptions) (*v1.P
 // Delete removes the storage asset that was created by Provision represented
 // by the given PV.
 func (p *hostPathProvisioner) Delete(volume *v1.PersistentVolume) error {
+	glog.Infof("Deleting volume %v", volume)
 	ann, ok := volume.Annotations["hostPathProvisionerIdentity"]
 	if !ok {
 		return errors.New("identity annotation not found on PV")
@@ -111,6 +114,8 @@ func (p *hostPathProvisioner) Delete(volume *v1.PersistentVolume) error {
 
 // Start storage provisioner server
 func StartStorageProvisioner() error {
+	glog.Infof("Initializing the Minikube CSI storage provisioner...")
+	
 	config, err := restclient.InClusterConfig()
 	if err != nil {
 		return err
@@ -135,7 +140,7 @@ func StartStorageProvisioner() error {
 	// PVs
 	pc := controller.NewProvisionController(clientset, provisionerName, hostPathProvisioner, serverVersion.GitVersion)
 
-	glog.Info("Starting storage provisioner server")
+	glog.Info("...Done initializing succesfully, now starting storage the CSI provisioner service !")
 	pc.Run(wait.NeverStop)
 	return nil
 }