Change the portworx volume attribute SupportsSELinux to false

pkg/volume/portworx/portworx.go

@@ -250,8 +250,7 @@ func (b *portworxVolumeMounter) GetAttributes() volume.Attributes {
 	return volume.Attributes{
 		ReadOnly:        b.readOnly,
 		Managed:         !b.readOnly,
-		// true ?
-		SupportsSELinux: true,
+		SupportsSELinux: false,
 	}
 }