Avoid re-registering listeners on ever poll!
Avoid re-registering listeners on ever poll!

Performance and stability issue. I discovered I was accidentally
re-registering the model listeners on ever invocation of poll, which was
slowly adding more and more events.

GregMeno/test,ceph/romana,SUSE/romana,SUSE/calamari-clients,SUSE/calamari-clients,GregMeno/test,ceph/romana,SUSE/calamari-clients,SUSE/romana,ceph/calamari-clients,ceph/calamari-clients,SUSE/romana,SUSE/calamari-clients,SUSE/calamari-clients,GregMeno/test,GregMeno/test,ceph/calamari-clients,GregMeno/test,ceph/romana,SUSE/romana,ceph/romana,ceph/calamari-clients,ceph/romana,ceph/calamari-clients,SUSE/romana