Add wait command for service to start

Change-Id: Ie7d25923bc9a669fc2c42267f8aec0f4096c15c4
diff --git a/keystone/server.sls b/keystone/server.sls
index 0772576..bf3fc4b 100644
--- a/keystone/server.sls
+++ b/keystone/server.sls
@@ -167,7 +167,7 @@
 {%- if not grains.get('noservices', False) %}
 keystone_syncdb:
   cmd.run:
-  - name: keystone-manage db_sync
+  - name: keystone-manage db_sync; sleep 1
   - require:
     - service: keystone_service
 {%- endif %}