mark client_channel_stress_test as flaky

Makefile

@@ -2204,8 +2204,6 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/cli_call_test || ( echo test cli_call_test failed ; exit 1 )
 	$(E) "[RUN]     Testing client_callback_end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/client_callback_end2end_test || ( echo test client_callback_end2end_test failed ; exit 1 )
-	$(E) "[RUN]     Testing client_channel_stress_test"
-	$(Q) $(BINDIR)/$(CONFIG)/client_channel_stress_test || ( echo test client_channel_stress_test failed ; exit 1 )
 	$(E) "[RUN]     Testing client_interceptors_end2end_test"
 	$(Q) $(BINDIR)/$(CONFIG)/client_interceptors_end2end_test || ( echo test client_interceptors_end2end_test failed ; exit 1 )
 	$(E) "[RUN]     Testing codegen_test_full"

build_autogenerated.yaml

@@ -5511,6 +5511,7 @@ targets:
 - name: client_channel_stress_test
   gtest: true
   build: test
+  run: false
   language: c++
   headers:
   - test/cpp/end2end/test_service_impl.h

test/cpp/client/BUILD

@@ -35,6 +35,7 @@ grpc_cc_test(
 grpc_cc_test(
     name = "client_channel_stress_test",
     srcs = ["client_channel_stress_test.cc"],
+    flaky = True,  # TODO(b/153136407)
     # TODO(jtattermusch): test fails frequently on Win RBE, but passes locally
     # reenable the tests once it works reliably on Win RBE.
     # TODO(roth): Test disabled on msan and tsan due to variable

tools/run_tests/generated/tests.json

@@ -4077,28 +4077,6 @@
     ], 
     "uses_polling": true
   }, 
-  {
-    "args": [], 
-    "benchmark": false, 
-    "ci_platforms": [
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "cpu_cost": 1.0, 
-    "exclude_configs": [], 
-    "exclude_iomgrs": [], 
-    "flaky": false, 
-    "gtest": true, 
-    "language": "c++", 
-    "name": "client_channel_stress_test", 
-    "platforms": [
-      "linux", 
-      "mac", 
-      "posix"
-    ], 
-    "uses_polling": true
-  }, 
   {
     "args": [], 
     "benchmark": false,