fix(platform): add support for Arch

cron/defaults.yaml

@@ -1,4 +1,6 @@
 # -*- coding: utf-8 -*-
 # vim: ft=yaml
 ---
-cron: {}
+cron:
+  pkg: cronie
+  service: cron

cron/osfamilymap.yaml

@@ -12,12 +12,11 @@
 ---
 Debian:
   pkg: cron
-  service: cron
 
 RedHat:
-  pkg: cronie
   service: crond
 
-Suse:
-  pkg: cronie
-  service: cron
+Suse: {}
+
+Arch:
+  service: cronie

test/integration/default/controls/service_spec.rb

@@ -7,6 +7,14 @@ control 'Cron service' do
     case os[:family]
     when 'debian', 'suse'
       'cron'
+    # Catch remaining `linux` platforms to identify by `name` at the end
+    when 'linux'
+      case os[:name]
+      when 'arch'
+        'cronie'
+      else
+        'crond'
+      end
     else
       'crond'
     end