pycadf 0.1.8 broke oslo
pycadf 0.1.8 broke oslo

add default_target_endpoint_var

Change-Id: I4e5a75c1ec72757ddca7d70e4d20dd0667646521
Fixes: bug #1227634

varunarya10/pycadf,citrix-openstack-build/pycadf