Convert all final classes to hiera

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Removed hiera lookups on access, activemq, iptables, mcollective, motd, nagios, nrpe, ntp, openssh, postfix.

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Mail command isnt in /usr/bin/mail

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Add concat var so we can set this properly via hiera / params class

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Set filemode properlier

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Now I understand why nagios_filemode was set like that ;/

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Add iptables rule exporting to iptables::rules_from_hash

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Fix nagios templates to use scope.lookupvar

Signed-off-by: Ben Agricola <bagricola@squiz.co.uk>
Merge commit 'bc0efd1725554d6a201710623771692fce8f75d4'