Merge pull request #154 from ckaenzig/fix-params-validation

manifests/conffile.pp

manifests/config.pp

manifests/files.pp

manifests/hash.pp

manifests/init.pp

manifests/ldap.pp

manifests/map.pp

spec/defines/postfix_conffile_spec.rb

spec/defines/postfix_config_spec.rb

spec/defines/postfix_hash_spec.rb

spec/defines/postfix_map_spec.rb

spec/defines/postfix_transport_spec.rb

spec/defines/postfix_virtual_spec.rb

spec/spec_helper.rb