Use ::osfamily instead of ::operatingsystem.

Add module dependency of puppetlabs/stdlib and razorsedge/lsb.
Refactor rspec tests.
Convert standard template parameters (like autoupdate) to be top
scope-aware.
Validate our booleans
Convert template variables to be local.
Added deprecation warnings in README.md.
Fix support for snmptrapd on Debian.

Turn on agentx support in snmpd.conf for Debian snmptrapd to work.
Update README.md.

Cause all text to wrap at 80 characters.
Add Issues around Debian support.
Change title to be more specific as to which SNMP stack (Net-SNMP) this
Puppet module supports.
Merge branch 'feature/osfamily' into develop