tests: set no_log_on_ceph_key_tasks=false

In order to not have to always reproduce it when a failure shows up in the CI
having the failure logged can make us save some time.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

tox.ini

@@ -376,6 +376,7 @@ commands=
   ansible-playbook -vv -i {changedir}/{env:INVENTORY} {toxinidir}/tests/functional/setup.yml
 
   ansible-playbook -vv -i {changedir}/{env:INVENTORY} {toxinidir}/{env:PLAYBOOK:site.yml.sample} --extra-vars "\
+      no_log_on_ceph_key_tasks=false \
       yes_i_know=true \
       deploy_secondary_zones=False \
       ceph_dev_branch={env:CEPH_DEV_BRANCH:main} \