loosen regular expression on hostname test
loosen regular expression on hostname test

Fixes #198

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