Post unit test coverage data to coveralls. (#1161)
Post unit test coverage data to coveralls. (#1161)

- This change will only post unit test coverage data to coveralls if the
  environment variable COVERALLS_REPO_TOKEN is set.
richbrowne/f5-openstack-agent,richbrowne/f5-openstack-agent,F5Networks/f5-openstack-agent,F5Networks/f5-openstack-agent,F5Networks/f5-openstack-agent,richbrowne/f5-openstack-agent