sdbusplus: use shorter type aliases

The sdbusplus headers provide shortened aliases for many types.
Switch to using them to provide better code clarity and shorter
lines.  Possible replacements are for:
  * bus_t
  * exception_t
  * manager_t
  * match_t
  * message_t
  * object_t
  * slot_t

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I9029cc722e7712633c15436bd3868d8c3209f567
diff --git a/control/json/dbus_zone.hpp b/control/json/dbus_zone.hpp
index 8dfce1a..83abb53 100644
--- a/control/json/dbus_zone.hpp
+++ b/control/json/dbus_zone.hpp
@@ -18,7 +18,7 @@
 #include "xyz/openbmc_project/Control/ThermalMode/server.hpp"
 
 /* Extend the Control::ThermalMode interface */
-using ThermalModeIntf = sdbusplus::server::object::object<
+using ThermalModeIntf = sdbusplus::server::object_t<
     sdbusplus::xyz::openbmc_project::Control::server::ThermalMode>;
 
 namespace phosphor::fan::control::json