flash2.py; minor changes in parameter + logs

Link to #3911
3 jobs for feature-s/3911-fusion-de-reads-avec-flash in 6 minutes and 5 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test Tools
passed #401235
test_tools

00:00:05

 
  Test Unit
passed #401236
web
test_server_unit

00:00:18

 
  Test Functional
passed #401237
docker x86_64
test_server_functional

00:05:40