enable previously disabled C# scenarios

tools/run_tests/performance/scenario_config.py

@@ -259,18 +259,16 @@ class CSharpLanguage:
         'csharp_protobuf_sync_to_async_unary_ping_pong', rpc_type='UNARY',
         client_type='SYNC_CLIENT', server_type='ASYNC_SERVER')
 
-    # TODO(jtattermusch): scenario works locally but fails on jenkins
-    #yield _ping_pong_scenario(
-    #    'csharp_protobuf_async_unary_qps_unconstrained', rpc_type='UNARY',
-    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
-    #    use_unconstrained_client=True,
-    #    categories=[SMOKETEST])
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_unary_qps_unconstrained', rpc_type='UNARY',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        use_unconstrained_client=True,
+        categories=[SMOKETEST])
 
-    # TODO(jtattermusch): scenario works locally but fails on jenkins
-    #yield _ping_pong_scenario(
-    #    'csharp_protobuf_async_streaming_qps_unconstrained', rpc_type='STREAMING',
-    #    client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
-    #    use_unconstrained_client=True)
+    yield _ping_pong_scenario(
+        'csharp_protobuf_async_streaming_qps_unconstrained', rpc_type='STREAMING',
+        client_type='ASYNC_CLIENT', server_type='ASYNC_SERVER',
+        use_unconstrained_client=True)
 
     yield _ping_pong_scenario(
         'csharp_to_cpp_protobuf_sync_unary_ping_pong', rpc_type='UNARY',