stack/erp5: Make replicating mariadb write to their own binlogs.

This change has no effect on stand-alone setups (which is what is
automatically deployed).
On setups configured to replicate from another database, it allows them to
takeover the role of the primary server, which allows rebuilding a
redundant setup. On such setup, the cost of this option is the extra I/O
load of binlogs being written to (in addition to the relay log and
database), and the corresponding disk space use.
32 jobs for fix/monitoring-promise-username-password
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Master.Python2

00:15:45

passed SlapOS.Eggs.UnitTest-Master.Python3

00:12:55

passed SlapOS.SlapRunner.ResilienceTest-Master

00:23:32

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:22:29

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

07:09:33

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

05:14:37

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

15:03:29

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python2

passed SlapOS.Eggs.UnitTest-Master.Python2

00:07:45

passed SlapOS.Eggs.UnitTest-Master.Python2

00:09:11

passed SlapOS.Eggs.UnitTest-Master.Python2

00:00:27

passed SlapOS.Eggs.UnitTest-Master.Python2

00:02:28

passed SlapOS.Eggs.UnitTest-Master.Python3

00:05:17

passed SlapOS.Eggs.UnitTest-Master.Python3

00:11:27

passed SlapOS.Eggs.UnitTest-Master.Python3

passed SlapOS.Eggs.UnitTest-Master.Python3

00:09:37

passed SlapOS.SlapRunner.ResilienceTest-Master

00:23:06

passed SlapOS.SlapRunner.ResilienceTest-Master

passed SlapOS.SlapRunner.ResilienceTest-Master

00:23:33

passed SlapOS.SlapRunner.ResilienceTest-Master

00:23:06

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:20:54

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:20:40

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:23:37

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python2

07:20:25

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

04:29:04

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3

04:56:46

failed SlapOS.SoftwareReleases.IntegrationTest-Master.Python3