Switch to using .vbprivk for signing everything now.

tests/big_kernel_tests.c

Index: tests/big_kernel_tests.c
diff --git a/tests/big_kernel_tests.c b/tests/big_kernel_tests.c
index b511c7267d829b3856221a2dce2bc4c955faa6cd..5524bad61f9975422e8f9b5a4ef77227d56dcc58 100644
--- a/tests/big_kernel_tests.c
+++ b/tests/big_kernel_tests.c
@@ -33,7 +33,7 @@ int BigKernelTest() {
   RSAPublicKey* firmware_key = RSAPublicKeyFromFile(kFirmwareKeyPublicFile);
   uint8_t* firmware_key_blob = BufferFromFile(kFirmwareKeyPublicFile, &len);
   uint8_t* kernel_sign_key_buf = BufferFromFile(kKernelKeyPublicFile, &len);
-  debug("Generating Big KernelImage...");
+  VBDEBUG(("Generating Big KernelImage..."));
   KernelImage* image =
       GenerateTestKernelImage(3,  /* RSA2048/SHA1 */
                               0,  /* RSA1024/SHA1 */
@@ -48,7 +48,7 @@ int BigKernelTest() {
     error_code = 1;
     goto cleanup;
   }
-  debug("Done.\n");
+  VBDEBUG(("Done.\n"));
   TEST_EQ(VerifyKernelImage(firmware_key, image, 0),
           VERIFY_KERNEL_SUCCESS,
           "Big KernelImage Verification");