Bug #7128 Check heartbeat on leading edge
Bug #7128 Check heartbeat on leading edge

John Spray gave good feedback about us reporting stale kraken data
sooner rather than later. Change the poller so it uses leading edge
instead of trailing to request host old the kraken data is.

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