add sort block to test

Author: dcrissman

lightblue-ldap-integration-test/src/test/resources/crud/find/customer-find-single.json

@@ -14,5 +14,8 @@
         "field": "firstName",
         "op": "$eq",
         "rvalue": "Frodo"
+    },
+    "sort": {
+        "firstName": "$desc"
     }
 }