fetch list of tts voices from provider (#289)

* fetch list of tts voices from provider

* revert serve-integration

* fix

* fix for aws

* fix for aws

* fix for aws

* update speech-utils version

lib/routes/api/speech-credentials.js

@@ -752,7 +752,7 @@ router.get('/:sid/test', async(req, res) => {
  */
 
 router.get('/speech/supportedLanguagesAndVoices', async(req, res) => {
-  const logger = req.app.locals.logger;
+  const {logger, getTtsVoices} = req.app.locals;
   try {
     const {vendor, label} = req.query;
     if (!vendor) {
@@ -767,7 +767,7 @@ router.get('/speech/supportedLanguagesAndVoices', async(req, res) => {
     const tmp = credentials && credentials.length > 0 ? credentials[0] : null;
     const cred = tmp ? JSON.parse(decrypt(tmp.credential)) : null;
     try {
-      const data = await getLanguagesAndVoicesForVendor(logger, vendor, cred);
+      const data = await getLanguagesAndVoicesForVendor(logger, vendor, cred, getTtsVoices);
       res.status(200).json(data);
     } catch (err) {
       throw new DbErrorUnprocessableRequest(err.message);