Ticket 49476 - backend refactoring phase1, fix failing tests
    
    this patch fixes a couple of failing tests
    - passwordpolicy, failing sometimes, with and without backend patch,
    	adding a sleep makes it pass
    - ticket48906 - check did look for backend config params in the (now)
    	wrong entry
    - ticket48252 - incorrect parameters passed to db2index, which only
    	had effect with th enew backend code
    - ticket49076 - bug in bdb_config code, fixe