fix MSAN error

test/cpp/common/alts_util_test.cc

@@ -26,6 +26,7 @@
 #include "src/core/tsi/alts/handshaker/alts_tsi_handshaker.h"
 #include "src/cpp/common/secure_auth_context.h"
 #include "src/proto/grpc/gcp/altscontext.upb.h"
+#include "test/core/util/test_config.h"
 #include "test/cpp/util/string_ref_helper.h"
 
 namespace grpc {
@@ -211,6 +212,7 @@ TEST(AltsUtilTest, AltsClientAuthzCheck) {
 }  // namespace grpc
 
 int main(int argc, char** argv) {
+  grpc::testing::TestEnvironment env(argc, argv);
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }