Expand readme, clean up code and move client.identity outside az
diff --git a/README.rst b/README.rst
index 08f383e..8ced57b 100644
--- a/README.rst
+++ b/README.rst
@@ -131,6 +131,9 @@
         enabled: true
         virtualization: kvm
         availability_zone: availability_zone_01
+        aggregates:
+        - hosts_with_fc
+        - hosts_with_ssd
         security_group: true
         resume_guests_state_on_host_boot: False
         bind: