google-assistant-grpc: generate v1alpha2 proto

Bug: 69066650
Change-Id: Iae08f8eb5e4d6a4ba9b753376b07501036434b7c

Author: proppy

google-assistant-grpc/google/assistant/embedded/v1alpha2/__init__.py

@@ -0,0 +1,13 @@
+# Copyright (C) 2017 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.