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: I41103c892db258a85640aa1442acd9a295c8a847
diff --git a/scheduled_host_transition.hpp b/scheduled_host_transition.hpp
index ec97c52..352fc8c 100644
--- a/scheduled_host_transition.hpp
+++ b/scheduled_host_transition.hpp
@@ -18,7 +18,7 @@
 
 using Transition =
     sdbusplus::xyz::openbmc_project::State::server::Host::Transition;
-using ScheduledHostTransitionInherit = sdbusplus::server::object::object<
+using ScheduledHostTransitionInherit = sdbusplus::server::object_t<
     sdbusplus::xyz::openbmc_project::State::server::ScheduledHostTransition>;
 
 /** @class ScheduledHostTransition
@@ -29,7 +29,7 @@
 class ScheduledHostTransition : public ScheduledHostTransitionInherit
 {
   public:
-    ScheduledHostTransition(sdbusplus::bus::bus& bus, const char* objPath,
+    ScheduledHostTransition(sdbusplus::bus_t& bus, const char* objPath,
                             size_t id, const sdeventplus::Event& event) :
         ScheduledHostTransitionInherit(
             bus, objPath, ScheduledHostTransition::action::defer_emit),
@@ -60,7 +60,7 @@
     friend class TestScheduledHostTransition;
 
     /** @brief sdbusplus bus client connection */
-    sdbusplus::bus::bus& bus;
+    sdbusplus::bus_t& bus;
 
     /** @brief Host id. **/
     const size_t id = 0;