test(Speech to Text): Add interimResults prop to tests

Author: lpatino10

speech-to-text/src/test/java/com/ibm/watson/developer_cloud/speech_to_text/v1/SpeechToTextIT.java

@@ -274,6 +274,7 @@ public void testRecognizeWebSocket() throws FileNotFoundException, InterruptedEx
         .wordAlternativesThreshold(0.5f)
         .model(EN_BROADBAND16K)
         .contentType(HttpMediaType.AUDIO_WAV)
+        .interimResults(true)
         .build();
 
     service.recognizeUsingWebSocket(options, new BaseRecognizeCallback() {