Run accessbot role before running accessbot

This will cause the config files to be updated (among several
other things we don't care about).

Change-Id: If1c1622eacbe820d5c7bdbb9681e673acbf88f98

playbooks/run-accessbot.yaml

@@ -1,5 +1,7 @@
 - hosts: 'eavesdrop:!disabled'
   name: "eavesdrop: run accessbot"
+  roles:
+    - accessbot
   tasks:
     - name: Run accessbot
       command: /usr/local/bin/accessbot