Fix Makefile for new congress/datalog directory
Fix Makefile for new congress/datalog directory

Change-Id: I948e390b3368075aa10b8a0564b983f9a8048476

ramineni/my_congress,ekcs/congress,openstack/congress,ekcs/congress,ramineni/my_congress,ekcs/congress,openstack/congress,ramineni/my_congress,ekcs/congress,ramineni/my_congress