Use GTEST_SKIP for non keybox devices

Bug: 251240681
Merged from https://widevine-internal-review.googlesource.com/179090

Change-Id: I8c539bfbccde7f22fb732951a95715935935858f

libwvdrmengine/cdm/core/test/keybox_ota_test.cpp

@@ -9,6 +9,7 @@
 
 #include "create_test_file_system.h"
 #include "crypto_session.h"
+#include "oec_device_features.h"
 #include "properties.h"
 #include "provisioning_holder.h"
 #include "test_base.h"
@@ -22,6 +23,9 @@ namespace wvcdm {
 class CdmOtaKeyboxTest : public ::testing::Test {
  public:
   void SetUp() override {
+    if (wvoec::global_features.provisioning_method != OEMCrypto_Keybox) {
+      GTEST_SKIP() << "Test for Prov 2.0 devices only.";
+    }
     ::testing::Test::SetUp();
     Properties::Init();
     const ::testing::TestInfo* const test_info =