Add createdby annotation for rbd and quobyte and make dynamical createdby key const

make dynamical createdby key const

pkg/volume/rbd/rbd.go

@@ -22,6 +22,7 @@ import (
 
 	"github.com/golang/glog"
 	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/uuid"
 	"k8s.io/kubernetes/pkg/api/v1"
@@ -31,6 +32,7 @@ import (
 	"k8s.io/kubernetes/pkg/util/strings"
 	"k8s.io/kubernetes/pkg/volume"
 	volutil "k8s.io/kubernetes/pkg/volume/util"
+	"k8s.io/kubernetes/pkg/volume/util/volumehelper"
 )
 
 // This is the primary entrypoint for volume plugins.
@@ -319,6 +321,7 @@ func (r *rbdVolumeProvisioner) Provision() (*v1.PersistentVolume, error) {
 	}
 	glog.Infof("successfully created rbd image %q", image)
 	pv := new(v1.PersistentVolume)
+	metav1.SetMetaDataAnnotation(&pv.ObjectMeta, volumehelper.VolumeDynamicallyCreatedByKey, "rbd-dynamic-provisioner")
 	rbd.SecretRef = new(v1.LocalObjectReference)
 	rbd.SecretRef.Name = secretName
 	rbd.RadosUser = r.Id