add heatmap icon (#13979)
add heatmap icon (#13979)


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