Cut(eos_cli_config_gen): Remove automatic conversion of dict-of-dicts…

… to lists

ansible_collections/arista/avd/docs/porting-guides/5.x.x.md

@@ -24,7 +24,34 @@ built into `eos_designs`.
 
 ### Data model changes from "dict-of-dicts" to "list-of-dicts"
 
-TODO: Removed type conversion
+In AVD 4.0.0 and across both `eos_designs` and `eos_cli_config_gen`, *all* "dict-of-dicts" data models with user-defined keys were changed to "list-of-dicts".
+In AVD 4.x inputs were auto-converted to the new data models.
+
+As of AVD 5.0.0 the automatic conversion from dict-of-dicts has been removed, so it is required to update the input data to the new data models.
+
+Errors will be raised for each data model not conforming to the list type when running AVD:
+
+```sh
+$ ansible-playbook playbook.yml
+<...>
+ERROR! [host1]: 'Validation Error: access_lists': {'ACL-01': {'sequence_numbers': {10: {'actio<...abbreviated...>4 any'}}}} is not of type 'list'
+```
+
+As an example, `ethernet_interfaces` was changed from:
+
+```yaml
+ethernet_intefaces:
+  Ethernet1:   # <-- User defined key
+    <...>
+```
+
+to:
+
+```yaml
+ethernet_interfaces:
+  - name: Ethernet1   # <-- "name" here is called the "primary_key" which must have a unique value across all list elements
+    <...>
+```
 
 ## Removal of Ansible plugins
 

ansible_collections/arista/avd/docs/release-notes/5.x.x.md

@@ -41,7 +41,12 @@ See the [porting guide](../porting-guides/5.x.x.md#removal-of-ansible-plugins) f
 
 ### Data model changes from "dict-of-dicts" to "list-of-dicts"
 
-TODO: Removed type conversion
+In AVD 4.0.0 and across both `eos_designs` and `eos_cli_config_gen`, *all* "dict-of-dicts" data models with user-defined keys were changed to "list-of-dicts".
+In AVD 4.x inputs were auto-converted to the new data models.
+
+As of AVD 5.0.0 the automatic conversion from dict-of-dicts has been removed, so it is required to update the input data to the new data models.
+
+See the [porting guide](../porting-guides/5.x.x.md#data-model-changes-from-dict-of-dicts-to-list-of-dicts) for details.
 
 ### All eos_designs and eos_cli_config_gen variables are always validated by schemas