HBASE-20979 Flaky test reporting should specify what JSON it needs and handle HTTP errors
HBASE-20979 Flaky test reporting should specify what JSON it needs and handle HTTP errors

Signed-off-by: Michael Stack <b26dc72d261a92c1cfd1e643717e450a84cf2122@apache.org>
(cherry picked from commit 346dd3218513d678c7e119d57e1081949b6972ff)

HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase,HubSpot/hbase