bundles/apt: add raspbian to supported OSes

bundles/apt/files/sources.list-raspbian-buster

@@ -0,0 +1 @@
+deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi

bundles/apt/items.py

@@ -2,6 +2,9 @@ supported_os = {
     'debian': {
         10: 'buster',
     },
+    'raspbian': {
+        10: 'buster',
+    },
 }
 
 assert supported_os[node.os][node.os_version[0]], '{}: OS {} {} is not supported by bundle:apt'.format(node.name, node.os, node.os_version)
@@ -41,13 +44,19 @@ files = {
         'delete': True,
     },
     '/etc/apt/sources.list': {
-        'source': 'sources.list-{}'.format(supported_os[node.os][node.os_version[0]]),
+        'source': 'sources.list-{}-{}'.format(node.os, supported_os[node.os][node.os_version[0]]),
+        'triggers': {
+            'action:apt_update',
+        },
     },
 }
 
 directories = {
     '/etc/apt/sources.list.d': {
         'purge': True,
+        'triggers': {
+            'action:apt_update',
+        },
     },
 }