add support for azure custom endpoints

lib/utils/speech-utils.js

@@ -67,6 +67,14 @@ const testMicrosoftTts = async(logger, credentials) => {
     custom_stt_endpoint
   } = credentials;
 
+  logger.info({
+    api_key,
+    region,
+    use_custom_tts,
+    custom_tts_endpoint,
+    use_custom_stt,
+    custom_stt_endpoint
+  }, 'testing microsoft tts');
   if (!api_key) throw new Error('testMicrosoftTts: credentials are missing api_key');
   if (!region) throw new Error('testMicrosoftTts: credentials are missing region');
   try {