Updating Flex Head node MAAS system id

Change-Id: I7fbb2d955e3210808d95a2d19b3bca32e1244072
(cherry picked from commit 6ba5360eb5c9821ac50ff67d45732cb28661be33)
diff --git a/deployment-configs/flex-pod1.yml b/deployment-configs/flex-pod1.yml
index 2d89d8a..dda3cea 100644
--- a/deployment-configs/flex-pod1.yml
+++ b/deployment-configs/flex-pod1.yml
@@ -10,7 +10,7 @@
 maas:
   ip: '10.192.4.61'
   api_key: 'rsz9S2cYpr7M5w4SfL:gyw4vKqLpWwagSjFGg:pamj7QtqGC6eUZusMj6rCWRdNy9qPab7'
-  head_system_id: 'wrqqk3'
+  head_system_id: 'wbgst6'
 
 dev_node:
   name: 'flex-cord-pod1'