Remove duplicate postgres startup
brew services doesn't seem to work, use pg_ctl instead
Pass -w to pg_ctl so that it waits for server to start
killall postgres
Remove killall postgres, put it in the jenkins config instead
Merge pull request #1882 from manics/rebased/dev_4_4/omero_homebrew_postgres_start

Remove duplicate postgres startup #11793 (rebased onto dev_4_4)