Fix cps ran yang data model

* Add a liquibase change set to update cps ran model data
* Rename model "cps-ran-schema-model@2021-01-28.yang" to
  be compliant with yang specifications related to file layout
  https://tools.ietf.org/html/rfc7950#section-5.2
* Improve yang validation error handling to provide more information
  about the validation failure in the request response
* Add csit test to verify cps ran model retrieval

Issue-ID: CPS-377
Signed-off-by: Bruno Sakoto <bruno.sakoto@bell.ca>
Change-Id: I4f0e337b50d79e81f895eb32f09ae9cb5d9d8a70
diff --git a/cps-ri/src/main/resources/changelog/changelog-master.yaml b/cps-ri/src/main/resources/changelog/changelog-master.yaml
index 460089c..41e5080 100644
--- a/cps-ri/src/main/resources/changelog/changelog-master.yaml
+++ b/cps-ri/src/main/resources/changelog/changelog-master.yaml
@@ -29,4 +29,5 @@
       file: changelog/db/changes/06-delete-not-required-fragment-index.yaml
   - include:
       file: changelog/db/changes/07-update-yang-resource-checksums.yaml
-
+  - include:
+      file: changelog/db/changes/08-update-yang-resources.yaml