Updated debtcollector to 1.18.0
Updated debtcollector to 1.18.0

Change-Id: I7a4b429c28ef3d3be5cb80da3d971b456b45d78a
Depends-on: Ib1911a43225772eb197cccb101313a958296c7bd

openstack/rpm-packaging,openstack/rpm-packaging