Added assertions on endpoint module results

Signed-off-by: Jakob Meng <code@jakobmeng.de>
Change-Id: If8befd62ac59ef19debf0d63abe76f11b47c2da3

ci/roles/endpoint/tasks/main.yml

@@ -9,10 +9,13 @@
      state: present
   register: endpoint_test
 
-- name: Ensure service endpoint was created
+- debug: var=endpoint_test
+
+- name: Assert return values of endpoint module
   assert:
     that:
-      - endpoint_test.endpoint.id is defined
+      # allow new fields to be introduced but prevent fields from being removed
+      - expected_fields|difference(endpoint_test.endpoint.keys())|length == 0
 
 - name: Ensure service have the proper endpoint
   assert: