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/builder.cpp b/sensors/builder.cpp
index f4257ad..82f54a1 100644
--- a/sensors/builder.cpp
+++ b/sensors/builder.cpp
@@ -44,7 +44,7 @@
 
 SensorManager
     buildSensors(const std::map<std::string, conf::SensorConfig>& config,
-                 sdbusplus::bus::bus& passive, sdbusplus::bus::bus& host)
+                 sdbusplus::bus_t& passive, sdbusplus::bus_t& host)
 {
     SensorManager mgmr(passive, host);
     auto& hostSensorBus = mgmr.getHostBus();