Generate a coverage report at the root of the project
Generate a coverage report at the root of the project

Zuul coverage job expects the report in a fixed place:
http://git.openstack.org/cgit/openstack-infra/zuul-jobs/\
tree/roles/fetch-coverage-output/defaults/main.yaml

Change-Id: I3e6f06be69410db44eef4ac66275d1046af27082

stackforge/fuel-devops,stackforge/fuel-devops