Upgrade APNS to use HTTP/2

- uses universal certificate
- removes tests logs
- standardized returned promises from APNS and GCM to something usable in _PushStatus

spec/ParsePushAdapter.spec.js

@@ -29,7 +29,9 @@ describe('ParsePushAdapter', () => {
     var parsePushAdapter = new ParsePushAdapter(pushConfig);
     // Check ios
     var iosSender = parsePushAdapter.senderMap['ios'];
-    expect(iosSender instanceof APNS).toBe(true);
+    expect(iosSender).not.toBe(undefined);
+    expect(typeof iosSender.send).toEqual('function');
+    expect(typeof iosSender.getConfiguration).toEqual('function');
     // Check android
     var androidSender = parsePushAdapter.senderMap['android'];
     expect(androidSender instanceof GCM).toBe(true);