Add an element that enables the SNMP daemon.

Installs and enables the Simple Network Management Protocol (SNMP)
daemon. Adding this element will allow for more advanced external
monitoring of Nodes from applications like Nagios.

Change-Id: I77a746a4a5a5409e112e2ef48a100814c42b4868
Authored-by: Chris Krelle <nobodycam@gmail.com>
Merge "Add an element that enables the SNMP daemon."