Running daemon under nobody user is not recommended (Closes: #970045)

[fauust]

Create a galera user that will run the daemon instead.

[ottok]

This is done in parallel at https://salsa.debian.org/mariadb-team/galera-4/-/merge_requests/8

[fauust]

Note that the underscore prefix for the user is a Debian recommendation and so may not be relevant for other distro. See: https://www.debian.org/doc/debian-policy/ch-opersys.html#users-and-groups

[ottok]

Note that https://salsa.debian.org/mariadb-team/galera-4/-/merge_requests/8 was merged in Debian. Please merge this upstream as well to avoid drift in Debian packaging.

[ottok]

Debian has had this for over 1.5 years already. Please merge this upstream as well to avoid drift in Debian packaging.

• https://udd.debian.org/patches.cgi?src=galera-4&version=26.4.19-1
• https://salsa.debian.org/mariadb-team/galera-4/-/blob/debian/latest/debian/patches/rename-daemon-user.patch