auto-publish: issue the capabilities in all cases

It seems better to message client that we support the capabilities in all cases.

--HG--
branch : stable
7 jobs for topic/stable/auto-publish in 3 minutes and 59 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed doc #68565

00:00:42

passed flake8 #68559

00:00:34

manual pytype #68560
allowed to fail manual
passed tests-py2-cext #68561

00:03:57

passed tests-py2-pure #68562

00:03:58

passed tests-py3-cext #68563

00:03:33

passed tests-py3-pure #68564

00:02:50