travis: Only report to Code Climate on *.1 jobs
travis: Only report to Code Climate on *.1 jobs

Apparently `cc-test-reporter` can't handle posting more than one report
for the same commit otherwise. Builds for the previous commit from #89:

  https://travis-ci.org/mbland/custom-links/builds/257918557
  https://travis-ci.org/mbland/custom-links/builds/257918579

mbland/url-pointers,mbland/custom-links,mbland/custom-links,mbland/url-pointers,mbland/url-pointers,mbland/custom-links