Change default OC agent port (#302)

Author: Liudmila Molkova

opencensus/trace/exporters/ocagent/trace_exporter.py

@@ -31,8 +31,7 @@
 from opencensus.trace.exporters.transports import sync
 
 # Default agent endpoint
-# TODO: subject to change: this is not a final default endpoint!
-DEFAULT_ENDPOINT = 'localhost:50051'
+DEFAULT_ENDPOINT = 'localhost:55678'
 
 # OpenCensus Version
 # TODO: https://github.com/census-instrumentation/opencensus-python/issues/296

tests/unit/trace/exporters/ocagent/test_trace_exporter.py

@@ -37,7 +37,7 @@ def test_constructor(self):
         exporter = TraceExporter(
             service_name=SERVICE_NAME)
 
-        self.assertEqual(exporter.endpoint, 'localhost:50051')
+        self.assertEqual(exporter.endpoint, 'localhost:55678')
 
     def test_constructor_with_endpoint(self):
         expected_endpoint = '0.0.0.0:50000'