Don't try to update timezone when grain noservices is set

as it will fail because dbus service is not running

Change-Id: I498f5b09b146c643f4d53ab0cb65146274f12b5d

linux/system/timezone.sls

@@ -5,8 +5,11 @@
 
 {{ system.timezone }}:
   timezone.system:
+  {%- if grains.get('noservices') %}
+  - onlyif: /bin/false
+  {%- endif %}
   - utc: {{ system.utc }}
 
 {%- endif %}
 
-{%- endif %}
+{%- endif %}