Add model selection to streaming sample (#1073)

Author: nnegrey

speech/cloud-client/src/main/java/com/example/speech/Recognize.java

@@ -349,6 +349,7 @@ public static void streamingRecognizeFile(String fileName) throws Exception, IOE
           .setEncoding(AudioEncoding.LINEAR16)
           .setLanguageCode("en-US")
           .setSampleRateHertz(16000)
+          .setModel("default")
           .build();
       StreamingRecognitionConfig config = StreamingRecognitionConfig.newBuilder()
           .setConfig(recConfig)