Backed out changeset e9d3c5251bd1

revert cubcweb_eac upgrade to 0.9.0 as cubicweb-saem_ref needs a lot of changes to
cubcweb_eac > 0.8.4

--HG--
branch : seda21
3 jobs for !37 with topic/seda21/eac_downgrade in 6 minutes and 20 seconds (queued for 5 seconds)
latest detached
Status Name Job ID Coverage
  Lint
passed check-manifest #455321
lint check-manifest

00:00:49

passed flake8 #455320
lint flake8

00:00:47

 
  Tests
passed py3 #455322
tests py3

00:05:28