add validator test for duplicate properties in json

org.hl7.fhir.validation/src/test/resources/validation-examples/manifest.json

@@ -157,6 +157,10 @@
 				"errorCount": 0,
 				"warningCount": 0
 			},
+			"patient-duplicate.json": {
+				"errorCount": 1,
+				"warningCount": 0
+			},
 			"patient-lang1.json": {
 				"errorCount": 0,
 				"warningCount": 1

org.hl7.fhir.validation/src/test/resources/validation-examples/patient-duplicate.json

@@ -0,0 +1,10 @@
+{
+  "resourceType" : "Patient",
+  "id" : "pat-good",
+  "text" : {
+    "status" : "generated",
+    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n      some text in no particular language\n    </div>"
+  },
+  "active" : false, 
+  "active" : true
+}