Fix a couple #includes

In the continual quest to get tidy passing when run in isolation, fix
some more includes.

This includes removing a circular #include to app.hpp.  We don't use
app.hpp in these files, which is why our code compiles but having this
include it here causes a few circular dependencies
app.hpp -> http_server.hpp -> persistent_data.hpp -> app.hpp.
app.hpp -> http_server.hpp -> authentication.hpp -> app.hpp.

This confuses clang when run on header files directly.

Fix a couple more includes at the same time.

Tested: Code compiles

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Ib62d78b49c7e38ef7061c9fbbf6b3d463f11917d
diff --git a/redfish-core/lib/update_service.hpp b/redfish-core/lib/update_service.hpp
index 3d29f28..041e072 100644
--- a/redfish-core/lib/update_service.hpp
+++ b/redfish-core/lib/update_service.hpp
@@ -21,6 +21,7 @@
 #include "dbus_utility.hpp"
 #include "query.hpp"
 #include "registries/privilege_registry.hpp"
+#include "task.hpp"
 #include "utils/dbus_utils.hpp"
 #include "utils/sw_utils.hpp"