tests: codeintel: only setup the manager once per class
* this greatly speeds up codeintel testing (from 5mins down to 3 mins)

(integrated from komodo (trunk) change 81325 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13403 b87d16e7-d29f-4ee1-b5ec-817d645d335f