Downgraded kombu because celery pulls in a buggy version (4.2.0)

3 jobs for master in 9 minutes and 53 seconds
Status Name Job ID Coverage
  Build Sdist
passed build:sdist #26876

00:00:13

 
  Build Image
passed build:image #26877
privileged

00:06:12

 
  Test
passed test #26878
privileged

00:03:28

82.0%