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: Ie36d234f4580029a7832a0cd179f3bb78a1a403f
diff --git a/pid/zone.hpp b/pid/zone.hpp
index c73ad39..12e47a6 100644
--- a/pid/zone.hpp
+++ b/pid/zone.hpp
@@ -20,7 +20,7 @@
 #include <vector>
 
 template <typename... T>
-using ServerObject = typename sdbusplus::server::object::object<T...>;
+using ServerObject = typename sdbusplus::server::object_t<T...>;
 using ModeInterface = sdbusplus::xyz::openbmc_project::Control::server::Mode;
 using ModeObject = ServerObject<ModeInterface>;
 
@@ -36,7 +36,7 @@
 {
   public:
     DbusPidZone(int64_t zone, double minThermalOutput, double failSafePercent,
-                const SensorManager& mgr, sdbusplus::bus::bus& bus,
+                const SensorManager& mgr, sdbusplus::bus_t& bus,
                 const char* objPath, bool defer) :
         ModeObject(bus, objPath,
                    defer ? ModeObject::action::defer_emit