Send all syslog messages on thinclients and fatclients to
"syslog"-server (the intention is to set this up in bootserver
dns so that it points to bootserver itself).
Add the Ubuntu default rsyslog.conf (from Precise) to
puavo-ltsp-bootserver -package (soon to be modified).
Add configurations so that bootserver receives syslog messages
from netboot clients and directs those to /var/log/hosts-directory
with a file for each hostname.  Introduce a new command,
"puavo-bootserver-setup-syslog".
Add --only-update-dnsmasq switch to puavo-init-bootserver-ddns.
Merge branch 'syslog'

  Add support for writing netboot client syslog messages under
  /var/log/hosts, including the necessary changes for clients
  and bootservers.