bundles/telegraf: properly support arch linux

bundles/telegraf/items.py

@@ -152,15 +152,3 @@ svc_systemd = {
         },
     },
 }
-
-if node.has_bundle('apt'):
-    svc_systemd['telegraf']['needs'].add('pkg_apt:telegraf')
-
-    users['telegraf']['needs'] = {
-        'pkg_apt:telegraf',
-    }
-    directories['/etc/telegraf/.cache']['needs'] = {
-        'pkg_apt:telegraf',
-    }
-
-# Arch users: install telegraf or telegraf-bin from AUR

bundles/telegraf/metadata.py

@@ -1,7 +1,12 @@
 defaults = {
     'apt': {
         'packages': {
-            'telegraf': {},
+            'telegraf': {
+                'needed_by': {
+                    'svc_systemd:telegraf',
+                    'user:telegraf',
+                },
+            },
         },
         'repos': {
             'influxdb': {
@@ -20,4 +25,13 @@ defaults = {
             },
         },
     },
+    'pacman': {
+        'telegraf-bin': {
+                'needed_by': {
+                    'svc_systemd:telegraf',
+                    'user:telegraf',
+                },
+            },
+        },
+    },
 }