clarify requirements for new defaults

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,5 +3,7 @@ Configuration Pull Request
 
 Make sure that the following steps are done before merging
 
-  - [ ] @devops team member has commented with :+1
-  - [ ] are you adding any new default values that need to be overriden when this goes live?  Make sure that they have been added to secure vars.
+  - [ ] @devops team member has commented with :+1:
+  - [ ] are you adding any new default values that need to be overriden when this goes live?  
+    - [ ] Open a ticket (DEVOPS) to make sure that they have been added to secure vars.
+    - [ ] Add an entry to the CHANGELOG.