Split init.pp into packages/files/service and add parameters
Linting
Various fixes, add spec for init class
Fix quotes in /etc/aliases
Add tests
Add tests
Add tests
Test default seltypes
Override parameters
Override parameters
Fix unscoped variables in templates/master.cf.common.erb
Use booleans for flags, not yes/no
Variable cleanup:

  Remove has_variable? and scope.lookupvar from templates
  Add parameters to postfix::files
  Pass parameters from postfix to postfix::files
Pass root_mail_recipient down to postfix::files
Validate parameters
Get rid of scope.lookupvar
Get rid of scope.lookupvar
Pass down myorigin and inet_interfaces to postfix::files
Test master_smtp, master_smtps and master_submission
Test myorigin, alias_maps, inet_interfaces