Updated openstack/openstack
Project: openstack/cinder  fb1b30bd3e5b302c39eba273b300ff8b28bb2cb8

Remove vol_type_id cast to str

Volume Type ID is string field, so we don't need to cast it
to str one more time

Change-Id: I8dcbfb770c412624d59c80bebe00d8c27ab0f823