exclude abstractmethod from coverage
exclude abstractmethod from coverage

Change-Id: I58c146ee9da8efbbfa69875c945c4716bc077c3d

MCDong/barbican,MCDong/barbican,cloudkeep/barbican,cneill/barbican,jmvrbanac/barbican,openstack/barbican,cloudkeep/barbican,cneill/barbican,jmvrbanac/barbican,openstack/barbican