erp5_hal_json_style: consider count(*) in regex

Status Job ID Name Coverage
  External
running ERP5.CodingStyleTest-Master

25069:08:53

running ERP5.PerformanceTest-Master

25069:07:42

running ERP5.UnitTest-Master

25069:08:22

running ERP5.UnitTest-Master.Medusa

25069:08:50

running SlapOS.Eggs.UnitTest-Master.Python2

25069:07:22

running SlapOS.Eggs.UnitTest-Master.Python3

25069:07:55