aether-2.0.0 models: Reorganize the YANG tree as submodules

Change-Id: I5c41899b466f7ece528d5e078924589118441104
diff --git a/config-models/aether-2.0.x/Chart.yaml b/config-models/aether-2.0.x/Chart.yaml
index 682915a..fd27292 100644
--- a/config-models/aether-2.0.x/Chart.yaml
+++ b/config-models/aether-2.0.x/Chart.yaml
@@ -4,7 +4,7 @@
 
 apiVersion: v2
 name: config-model-aether-2
-version: 2.0.0
+version: 2.0.1
 kubeVersion: ">=1.18.0"
 appVersion: 2.0.0
 description: Aether config model