Update index.md

hackathons/12-psp/3-migration/index.md

@@ -20,6 +20,7 @@
     1. Customers who have requested and are awaiting these future features (e.g. Pfizer)
     2. Customers who are actively expanding their usage and may take advantage of new functionality in their plans once aware
     3. Customers who are not actively expanding their sites/functionality and will see no tangible benefit (e.g. BASF, potatoes, etc)
+    4. Customers who we manage DNS (77)
 - **Proposal:**  from an ease of maintenance perspective, let's run this for everyone. i.e Pre-populate config bus with v4 configs so all are ready to make the switch once we communicate that they need to and help them to do it, regardless of their customer group.  Avoid maintaining/supporting both for any longer than necessary.