Update Wifi tests

Wifi tests used old WifiConfiguration values. This updates it to the new
values.

Change-Id: I14498aebba50f906181fa377b84855eae3d046fc

Author: kruton

core/tests/ConnectivityManagerTest/src/com/android/connectivitymanagertest/AccessPointParserHelper.java

@@ -215,7 +215,9 @@ public void characters(char ch[], int start, int length) throws SAXException {
                         config.phase2.setValue("");
                         config.ca_cert.setValue("");
                         config.client_cert.setValue("");
-                        config.private_key.setValue("");
+                        config.engine.setValue("");
+                        config.engine_id.setValue("");
+                        config.key_id.setValue("");
                         config.identity.setValue("");
                         config.anonymous_identity.setValue("");
                         break;