Add scope parameter for Cloud Speech

src/aiy/cloudspeech.py

@@ -38,6 +38,11 @@
 AUDIO_FORMAT=AudioFormat(sample_rate_hz=AUDIO_SAMPLE_RATE_HZ,
                          num_channels=1,
                          bytes_per_sample=2)
+_CLOUD_SPEECH_OAUTH_SCOPE = (
+    'https://www.googleapis.com/auth/cloud-platform'
+)
+
+
 
 logger = logging.getLogger(__name__)
 
@@ -47,7 +52,7 @@ def __init__(self, service_accout_file=None):
         if service_accout_file is None:
             service_accout_file = os.path.expanduser('~/cloud_speech.json')
 
-        credentials = service_account.Credentials.from_service_account_file(service_accout_file)
+        credentials = service_account.Credentials.from_service_account_file(service_accout_file, scopes=[_CLOUD_SPEECH_OAUTH_SCOPE])
         self._client = speech.SpeechClient(credentials=credentials)
 
     def _make_config(self, language_code, hint_phrases):