bmc: allow configuring the verification output path

Allow configuring the file checked to determine the status of the
asynchronous image verification process.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ia37ed81cd08fa4ce0313092134c476cc42eb8119
diff --git a/test/firmware_canhandle_unittest.cpp b/test/firmware_canhandle_unittest.cpp
index 1ec83bd..f739b9e 100644
--- a/test/firmware_canhandle_unittest.cpp
+++ b/test/firmware_canhandle_unittest.cpp
@@ -36,7 +36,7 @@
     auto bus_mock = sdbusplus::get_mocked_new(&sdbus_mock);
 
     auto handler = FirmwareBlobHandler::CreateFirmwareBlobHandler(
-        std::move(bus_mock), blobs, data);
+        std::move(bus_mock), blobs, data, "");
 
     for (const auto& item : items)
     {