Servers run as "root" on Ubuntu.

[smarnach]

Describe the bug The servers hbbs and hbbr run as the root user rather than as a non-privileged user.

Describe the environment Debian package installed on Ubuntu 20.04.

How to Reproduce the bug Steps to reproduce the behavior:

1. Install the package.
2. The server process hbbs and hbbr now run as the root user.

Expected behavior The server process don't need any special privileges, so they should run as a non-privileged user.