Suppress gtest error for tests without any instance

Bug: 162052785
Test: m -j vts
Change-Id: I8c1a48e6fbd7c8161137902b5332911fa0d7b8b3
diff --git a/identity/aidl/vts/UserAuthTests.cpp b/identity/aidl/vts/UserAuthTests.cpp
index 5b4c8f1..327493c 100644
--- a/identity/aidl/vts/UserAuthTests.cpp
+++ b/identity/aidl/vts/UserAuthTests.cpp
@@ -465,6 +465,7 @@
                  true /* useSessionTranscript */);
 }
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(UserAuthTests);
 INSTANTIATE_TEST_SUITE_P(
         Identity, UserAuthTests,
         testing::ValuesIn(android::getAidlHalInstanceNames(IIdentityCredentialStore::descriptor)),