Bug#913784: munin-node: 'Duplicate line for path "/run/munin", ignoring' warning after upgrade to 2.0.42-5

[Vincas Dargis]

This is the content of file:
```
# cat /usr/lib/tmpfiles.d/munin-node.conf
# keep in sync with debian/munin.munin-(node|async).init (non-systemd)
d /run/munin 0755 munin munin
d /var/log/munin 0755 munin adm
```