add vtr to xos-manage makemigrations
add vtr to xos-manage makemigrations

cboling/xos,jermowery/xos,xmaruto/mcord,cboling/xos,jermowery/xos,xmaruto/mcord,cboling/xos,jermowery/xos,cboling/xos,jermowery/xos,xmaruto/mcord,xmaruto/mcord,cboling/xos