[debian-mysql] Bug#1073847: Bug#1073847: Systemd: Fails to restart after OOM

[Otto Kekäläinen]

Hi Sam!

If you report this upstream (or better, send them a Pull Request
with the change) and they accept it, we could backport that to Debian.

https://github.com/MariaDB/server/blob/main/support-files/mariadb.service.in#L109C1-L112C14:

```
# Restart crashed server only, on-failure would also restart, for example, when
# my.cnf contains unknown option
Restart=on-abort
RestartSec=5s
```

In Debian we do not have any plans to deviate from upstream systemd
file.