erp5: enable mariadb general log

https://mariadb.com/kb/en/general-query-log/
7 jobs for scalability_crash_mariadb in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

04:23:52

passed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

07:15:52

canceled SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

passed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

07:45:06

canceled SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

09:35:18

failed SlapOS.SoftwareReleases.IntegrationTest-Jerome-WIP

04:20:23