Use runOn syntax to specify CRUD test requirements

JAVA-3339

Author: jstewart148

driver-core/src/test/resources/crud/v2/aggregate-merge.json

@@ -1,7 +1,7 @@
 {
   "runOn": [
     {
-      "minServerVersion": "4.2.0"
+      "minServerVersion": "4.1.11"
     }
   ],
   "data": [