Add async_method_call to utility

Adding async_method_call in dbus utility gives us a place where we can
intercept method call requests from dbus to potentially add
logging/caching.

An example of logging is in the later commit:
https://gerrit.openbmc.org/c/openbmc/bmcweb/+/78265/

We already do this for setProperty, this moves the method calls to
follow a similar pattern.

Tested: Redfish service validator passes.

Change-Id: I6d2c96e2b6b6a023ed2138106a55faebca161592
Signed-off-by: Ed Tanous <etanous@nvidia.com>
diff --git a/redfish-core/lib/bios.hpp b/redfish-core/lib/bios.hpp
index 99635b2..560fe7f 100644
--- a/redfish-core/lib/bios.hpp
+++ b/redfish-core/lib/bios.hpp
@@ -6,7 +6,7 @@
 
 #include "app.hpp"
 #include "async_resp.hpp"
-#include "dbus_singleton.hpp"
+#include "dbus_utility.hpp"
 #include "error_messages.hpp"
 #include "http_request.hpp"
 #include "logging.hpp"
@@ -103,7 +103,8 @@
         return;
     }
 
-    crow::connections::systemBus->async_method_call(
+    dbus::utility::async_method_call(
+        asyncResp,
         [asyncResp](const boost::system::error_code& ec) {
             if (ec)
             {