fix tests by closing iterators and cursors
fix tests by closing iterators and cursors

linearb/influxdb,linearb/influxdb,nooproblem/influxdb,mark-rushakoff/influxdb,mark-rushakoff/influxdb,influxdb/influxdb,influxdb/influxdb,influxdb/influxdb,linearb/influxdb,linearb/influxdb,influxdata/influxdb,nooproblem/influxdb,nooproblem/influxdb,li-ang/influxdb,mark-rushakoff/influxdb,mark-rushakoff/influxdb,li-ang/influxdb,influxdb/influxdb,influxdb/influxdb,nooproblem/influxdb,mark-rushakoff/influxdb,linearb/influxdb,influxdb/influxdb,nooproblem/influxdb,influxdata/influxdb,mark-rushakoff/influxdb