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/sensor-monitor/threshold_alarm_logger.cpp b/sensor-monitor/threshold_alarm_logger.cpp
index d64366b..b2fd7e8 100644
--- a/sensor-monitor/threshold_alarm_logger.cpp
+++ b/sensor-monitor/threshold_alarm_logger.cpp
@@ -83,7 +83,7 @@
              ErrorData{"PerfLossLowClear", Entry::Level::Informational}}}}}}};
 
 ThresholdAlarmLogger::ThresholdAlarmLogger(
-    sdbusplus::bus::bus& bus, sdeventplus::Event& event,
+    sdbusplus::bus_t& bus, sdeventplus::Event& event,
     std::shared_ptr<PowerState> powerState) :
     bus(bus),
     event(event), _powerState(std::move(powerState)),
@@ -135,7 +135,7 @@
         });
 }
 
-void ThresholdAlarmLogger::propertiesChanged(sdbusplus::message::message& msg)
+void ThresholdAlarmLogger::propertiesChanged(sdbusplus::message_t& msg)
 {
     std::map<std::string, std::variant<bool>> properties;
     std::string sensorPath = msg.get_path();
@@ -180,7 +180,7 @@
     }
 }
 
-void ThresholdAlarmLogger::interfacesRemoved(sdbusplus::message::message& msg)
+void ThresholdAlarmLogger::interfacesRemoved(sdbusplus::message_t& msg)
 {
     static const std::vector<std::string> thresholdNames{
         warningInterface, criticalInterface, perfLossInterface};
@@ -224,7 +224,7 @@
                 createEventLog(sensorPath, interface, property, alarmValue);
             }
         }
-        catch (const sdbusplus::exception::exception& e)
+        catch (const sdbusplus::exception_t& e)
         {
             // Sensor daemons that get their direction from entity manager
             // may only be putting either the high alarm or low alarm on