Fix vsphere selinux support

Managed flag must be true for SELinux relabelling to work
for vsphere.

pkg/volume/vsphere_volume/vsphere_volume.go

@@ -188,6 +188,7 @@ type vsphereVolumeMounter struct {
 func (b *vsphereVolumeMounter) GetAttributes() volume.Attributes {
 	return volume.Attributes{
 		SupportsSELinux: true,
+		Managed:         true,
 	}
 }