Allow coverage to be collected when running integration tests
Allow coverage to be collected when running integration tests

This assumes that coverage has already been set up as per build.sh.

googleapis/google-cloud-dotnet,jskeet/google-cloud-dotnet,benwulfe/google-cloud-dotnet,benwulfe/google-cloud-dotnet,jskeet/google-cloud-dotnet,jskeet/google-cloud-dotnet,jskeet/google-cloud-dotnet,iantalarico/google-cloud-dotnet,iantalarico/google-cloud-dotnet,chrisdunelm/gcloud-dotnet,iantalarico/google-cloud-dotnet,chrisdunelm/google-cloud-dotnet,evildour/google-cloud-dotnet,jskeet/google-cloud-dotnet,benwulfe/google-cloud-dotnet,evildour/google-cloud-dotnet,evildour/google-cloud-dotnet,jskeet/gcloud-dotnet,googleapis/google-cloud-dotnet,chrisdunelm/google-cloud-dotnet,chrisdunelm/google-cloud-dotnet,googleapis/google-cloud-dotnet