disable grpc_tool_test on msan

test/cpp/util/BUILD

@@ -185,6 +185,7 @@ grpc_cc_test(
     external_deps = [
         "gtest",
     ],
+    tags = ["nomsan"],  # death tests seem to be incompatible with msan
     deps = [
         ":grpc_cli_libs",
         ":test_util",

tools/remote_build/rbe_common.bazelrc

@@ -56,7 +56,7 @@ build:msan --copt=-gmlt
 # TODO(jtattermusch): use more reasonable test timeout
 build:msan --test_timeout=3600
 # TODO(jtattermusch): revisit the disabled tests
-build:msan --test_tag_filters=-json_run_localhost
+build:msan --test_tag_filters=-nomsan,-json_run_localhost
 build:msan --cxxopt=--stdlib=libc++
 # setting LD_LIBRARY_PATH is necessary
 # to avoid "libc++.so.1: cannot open shared object file"