[tox] add check-manifest

4 jobs for topic/default/checkmanif in 1 minute and 3 seconds (queued for 18 seconds)
Status Job ID Name Coverage
  Test
passed check-manifest #67593

00:00:24

passed flake8 #67590

00:00:26

passed py27 #67591

00:00:50

passed py3 #67592

00:01:02