Fix arrow alignment to make lint happy.
Add support for sysservices.

Refactor templates/snmpd.conf.erb layout.
Rake validate to also check ERB for syntax errors.
Add support for dlmod.
Implement configuration safety valves.
Add agentaddress and snmptrapdaddr parameters.

For security reasons, the SNMP daemons are configured to listen on the
loopback interface (127.0.0.1).  Use `agentaddress` and `snmptrapdaddr`
to change this configuration.
Refactor SNMP configs.

Remove extraneous config options that do not provide a simple, secure
configuration.
Merge branch 'feature/refactor_configs' into develop