Update format to be compatible with 11329 patchset

Change-Id: I37377ab6a6d3682cef36c0dfd65158aa64a0600f
diff --git a/kubernetes-configs/flex-pod1-olt.yml b/kubernetes-configs/flex-pod1-olt.yml
index 98c1a1e..0f27e0b 100644
--- a/kubernetes-configs/flex-pod1-olt.yml
+++ b/kubernetes-configs/flex-pod1-olt.yml
@@ -28,11 +28,19 @@
 
 onosImage: 'onosproject/onos:1.13.4'
 
-xos_coreImage: 'xosproject/xos-core:2.1.0'
+# XOS core images
+images:
+  xos_core:
+    tag: 2.1.0
+
+# service images
 fabric:
-  fabric_synchronizerImage: 'xosproject/fabric-synchronizer:2.1.0'
+  images:
+    tag: 2.1.0
+
 att-workflow-driver:
-  attWorkflowDriver_synchronizerImage: 'xosproject/att-workflow-driver-synchronizer:1.0.0'
+  images:
+    tag: 1.0.0
 
 # application_logs: |
 #   log4j.logger.org.opencord.olt = DEBUG