fix random_names test
fix random_names test

jayhetee/dask,simudream/dask,mraspaud/dask,chrisbarber/dask,vikhyat/dask,clarkfitzg/dask,ssanderson/dask,freeman-lab/dask,PhE/dask,marianotepper/dask,marianotepper/dask,PhE/dask,pombredanne/dask,mrocklin/dask,cowlicks/dask,esc/dask,pombredanne/dask,ssanderson/dask,minrk/dask,jcrist/dask,jcrist/dask,minrk/dask,ContinuumIO/dask,blaze/dask,mraspaud/dask,dask/dask,wiso/dask,dask/dask,simudream/dask,jakirkham/dask,clarkfitzg/dask,freeman-lab/dask,vikhyat/dask,blaze/dask,hainm/dask,jayhetee/dask,hainm/dask,wiso/dask,cpcloud/dask,esc/dask,gameduell/dask,jakirkham/dask,ContinuumIO/dask,mrocklin/dask,mikegraham/dask