- Sets the hostname on rabbitmq and mariadb log messages
according to the local host.
- Sets the hostname on syslog log messages by extracting it
from the syslog message. In many cases this will be the
same as the local host, but it may also be a remote host.
Closes-Bug: #1726596
Change-Id: If7c53916d5a355b3aac33d6a62d89d02474e8b53