Use logdest syslog for puppet

Newer puppet 3.4.3 has working syslog
for puppet apply. Thus we can send messages
to syslog easily without usage of ImFile puppet
module.

Change-Id: Ibfdd4ab094fcf9586376a7f67369db65adc4006c
Closes-bug: #1304286
Merge "Use logdest syslog for puppet"