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: I86dfa77a53a306b0e868eeb82de30b270704c455
diff --git a/sensor.cpp b/sensor.cpp
index add4617..2f6ee34 100644
--- a/sensor.cpp
+++ b/sensor.cpp
@@ -122,7 +122,7 @@
                                               TimedoutMap& timedoutMap)
 {
     // Get the initial value for the value interface.
-    auto& bus = *std::get<sdbusplus::bus::bus*>(info);
+    auto& bus = *std::get<sdbusplus::bus_t*>(info);
     auto& obj = std::get<InterfaceMap>(info);
     auto& objPath = std::get<std::string>(info);
 
@@ -251,7 +251,7 @@
         }
     }
 
-    auto& bus = *std::get<sdbusplus::bus::bus*>(info);
+    auto& bus = *std::get<sdbusplus::bus_t*>(info);
 
     iface = std::make_shared<StatusObject>(
         bus, objPath.c_str(), StatusObject::action::emit_no_signals);