test(speech-to-text): test update for speech-to-text on WatsonAutoConfig

Author: kevinkowa

src/test/java/com/ibm/watson/developer_cloud/spring/boot/test/WatsonAutoConfigTest.java

@@ -61,6 +61,9 @@ public void watsonBeanConfigFromEnvironment() {
     assertNotNull(speechToText);
     assertEquals(url, speechToText.getServiceUrl());
 
-    assertEquals(Authenticator.AUTHTYPE_IAM, speechToText.getAuthenticator().authenticationType());
+    assertEquals(Authenticator.AUTHTYPE_BASIC, speechToText.getAuthenticator().authenticationType());
+    BasicAuthenticator authenticator = (BasicAuthenticator) speechToText.getAuthenticator();
+    assertEquals(username, authenticator.getUsername());
+    assertEquals(password, authenticator.getPassword());
   }
 }