Added test for fetch from repositories not providing scope/service.
Added test for fetch from repositories not providing scope/service.

Review: https://reviews.apache.org/r/72080

dforsyth/mesos,Gilbert88/mesos,abudnik/mesos,abudnik/mesos,reneploetz/mesos,abudnik/mesos,reneploetz/mesos,reneploetz/mesos,Gilbert88/mesos,dforsyth/mesos,dforsyth/mesos,abudnik/mesos,reneploetz/mesos,Gilbert88/mesos,Gilbert88/mesos,abudnik/mesos,dforsyth/mesos,dforsyth/mesos,dforsyth/mesos,reneploetz/mesos,Gilbert88/mesos,Gilbert88/mesos,reneploetz/mesos,reneploetz/mesos,abudnik/mesos,Gilbert88/mesos,dforsyth/mesos,abudnik/mesos