Add dataverse utils tests
Add dataverse utils tests

felliott/waterbutler,CenterForOpenScience/waterbutler,rafaeldelucena/waterbutler,Ghalko/waterbutler,Johnetordoff/waterbutler,icereval/waterbutler,hmoco/waterbutler,chrisseto/waterbutler,cosenal/waterbutler,TomBaxter/waterbutler,RCOSDP/waterbutler,kwierman/waterbutler,rdhyee/waterbutler