Fix error in the 'get_tenant'
Fix error in the 'get_tenant'

EinsamHauer/graphite-web-iow,cybem/graphite-web-iow,EinsamHauer/graphite-web-iow,EinsamHauer/graphite-web-iow,cybem/graphite-web-iow,cybem/graphite-web-iow,EinsamHauer/graphite-web-iow,cybem/graphite-web-iow,cybem/graphite-web-iow,EinsamHauer/graphite-web-iow,EinsamHauer/graphite-web-iow,cybem/graphite-web-iow