Filter keybox tests with GTEST_SKIP

(merged from go/wvgerrit/183630)

Bug: 288404945, 251240681
Test: keybox tests
Change-Id: I38ed2ba54c9f756693902fd7d0044d4e42bbc2fd

libwvdrmengine/oemcrypto/test/oemcrypto_license_test.cpp

@@ -85,6 +85,9 @@ void TestMaxKeys(SessionUtil* util, size_t num_keys_per_session) {
 }
 
 TEST_F(OEMCryptoSessionTestKeyboxTest, TestKeyboxIsValid) {
+  if (global_features.provisioning_method != OEMCrypto_Keybox) {
+    GTEST_SKIP() << "Test for Prov 2.0 devices only.";
+  }
   ASSERT_EQ(OEMCrypto_SUCCESS, OEMCrypto_IsKeyboxValid());
 }
 
@@ -967,4 +970,4 @@ INSTANTIATE_TEST_SUITE_P(TestAPI16, OEMCryptoRefreshTestAPI16,
                          Range<uint32_t>(kCoreMessagesAPI, kCurrentAPI + 1));
 
 /// @}
-}  // namespace wvoec
+}  // namespace wvoec