Rotate puppet cron job log file.
Rotate puppet cron job log file.

Fixes bug 966314.

Moves the puppet cron job log file from /tmp to /var/log
and adds it to logrotate.

Change-Id: Id3e218a3a2bf97c5e1f07cb40c39b5a795164888

open-switch/infra_puppet-jenkins,open-switch/infra_puppet-jenkins