added qps scenario change to sanity checks

tools/run_tests/sanity/check_qps_scenario_changes.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+
+# Copyright 2018 gRPC authors.
+#
+# 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.
+
+import os
+import sys
+import subprocess
+
+os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../../../test/cpp/qps'))
+subprocess.call(['./json_run_localhost_scenario_gen.py'])
+subprocess.call(['./qps_json_driver_scenario_gen.py'])
+
+output = subprocess.check_output(['git', 'status', '--porcelain'])
+qps_json_driver_bzl = 'test/cpp/qps/qps_json_driver_scenarios.bzl'
+json_run_localhost_bzl = 'test/cpp/qps/json_run_localhost_scenarios.bzl'
+
+if qps_json_driver_bzl in output or json_run_localhost_bzl in output:
+  print('qps benchmark scenarios have been updated, please commit '
+        'test/cpp/qps/qps_json_driver_scenarios.bzl and/or '
+        'test/cpp/qps/json_run_localhost_scenarios.bzl')
+  sys.exit(1)

tools/run_tests/sanity/sanity_tests.yaml

@@ -3,6 +3,7 @@
 - script: tools/run_tests/sanity/check_bazel_workspace.py
 - script: tools/run_tests/sanity/check_cache_mk.sh
 - script: tools/run_tests/sanity/check_owners.sh
+- script: tools/run_tests/sanity/check_qps_scenario_changes.py
 - script: tools/run_tests/sanity/check_shellcheck.sh
 - script: tools/run_tests/sanity/check_submodules.sh
 - script: tools/run_tests/sanity/check_test_filtering.py