AppComponent (roadmap) fetchEpicsForTimeframe karma master failure

Job #177820919 failed for 8e25c8d1:

FAILED TESTS:
  AppComponent
    methods
      fetchEpicsForTimeframe
        ✖ calls service.fetchEpicsForTimeframe and sets `hasError` to true and shows flash message when request failed
          Chrome
        Expected 'Something went wrong. Please try again.' to be 'Something went wrong while fetching epics'.
            at webpack:///builds/gitlab-org/gitlab-ee/ee/spec/javascripts/roadmap/components/app_spec.js:3813 <- spec/javascripts/test_bundle.bundle.js:531660:74

Whilst we're there it might be a good idea to change the spec root desc to Roadmap App as AppComponent is very generic.