Add servant packages.

build-constraints.yaml

@@ -629,6 +629,13 @@ packages:
         - alarmclock
         - bank-holidays-england
 
+    "Haskell Servant jkarni@gmail.com @jkarni":
+        - servant
+        - servant-client
+        - servant-docs
+        - servant-jquery
+        - servant-server
+
     "Stackage upper bounds":
 
         # Force a specific version that's compatible with transformers 0.3