Add tmp directory to ignoring list.
Modify Rakefile.
Add rcfiles.
Install rcfiles.
Add recipe for installing munin-node.

  - Package installation:
  - Downloading the munin-node debs.
  - Install munin-node debs.
  - Enable and start the munin-node service when booting.
  - Change the iptables rules in order to allow the munin-node communication.