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/sensors/host.hpp b/sensors/host.hpp
index bf935b7..efbc17d 100644
--- a/sensors/host.hpp
+++ b/sensors/host.hpp
@@ -11,7 +11,7 @@
 #include <type_traits>
 
 template <typename... T>
-using ServerObject = typename sdbusplus::server::object::object<T...>;
+using ServerObject = typename sdbusplus::server::object_t<T...>;
 
 using ValueInterface = sdbusplus::xyz::openbmc_project::Sensor::server::Value;
 using ValueObject = ServerObject<ValueInterface>;
@@ -42,11 +42,11 @@
   public:
     static std::unique_ptr<Sensor> createTemp(const std::string& name,
                                               int64_t timeout,
-                                              sdbusplus::bus::bus& bus,
+                                              sdbusplus::bus_t& bus,
                                               const char* objPath, bool defer);
 
-    HostSensor(const std::string& name, int64_t timeout,
-               sdbusplus::bus::bus& bus, const char* objPath, bool defer) :
+    HostSensor(const std::string& name, int64_t timeout, sdbusplus::bus_t& bus,
+               const char* objPath, bool defer) :
         Sensor(name, timeout),
         ValueObject(bus, objPath,
                     defer ? ValueObject::action::defer_emit