Release python-qinlingclient 4.0.0

Bump the version because --function-alias suppport[1] has been
add to function execution, webhooks and jobs.

Story: #2005913
Task: #34173

[1] 7e251a2052

Change-Id: I8bec038f8e745746dd4b9809f299c324b861d990

deliverables/train/python-qinlingclient.yaml

@@ -15,3 +15,7 @@ releases:
     projects:
       - hash: 01cde229deff04955720d82ee671d57c50b2b5f3
         repo: openstack/python-qinlingclient
+  - version: 4.0.0
+    projects:
+      - hash: 7e251a205233131131d06200a8cc76a510431ccc
+        repo: openstack/python-qinlingclient