Fix float64 comparison in stats_helpers_test.go
Fix float64 comparison in stats_helpers_test.go

Signed-off-by: Akihiro Suda <ea940da7e429af3d0d0c18296cabd0112a36bad5@lab.ntt.co.jp>

redpanda/cli,ashfall/cli,docker/cli,thaJeztah/cli,ashfall/cli,e11137/cli,dnephin/cli,Zebrilee/cli,riyazdf/cli,cpuguy83/cli,riyazdf/cli,docker/cli,cpuguy83/cli,redpanda/cli,dnephin/cli,Zebrilee/cli,e11137/cli,thaJeztah/cli,allencloud/cli,allencloud/cli