munin-node: Add OpenBSD support

roles/munin-node/tasks/main.yml

@@ -1,8 +1,12 @@
 ---
+- name: include OS-specific variables
+  include_vars: "{{ ansible_os_family }}.yml"
+
 - name: install packages
   package:
-    name: munin-node
+    name: "{{ item }}"
     state: installed
+  with_items: "{{ munin_node_packages }}"
 
 - name: create config
   template:
@@ -15,6 +19,6 @@
 
 - name: enable service
   service:
-    name: munin-node
+    name: "{{ munin_node_service }}"
     state: started
     enabled: true