Request Manager 2 deployment

All points discussed yesterday implemented:

-checking env. var COUCHURL is moved into config-localhost.py
-COUCH_HOST is figured out in the deploy script and config.py overwritten, there are no other references to vocms names except from the deploy script
-offsite variant removed and redundant case cases cleaned up
-config.py is the only configuration file for ReqMgr2, there is no another one under WMCore.ReqMgr
-ReqMgr2 made dependent on ReqMgr1 (because of shared couchapps push), while deploying it's necessary to make sure both use the same WMCore tag


@geneguvo, please review. 

I will be great if you could please upgrade test-bed with reqmgr.spec 1.85, reqmgr2.spec 1.2. Thanks!