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/dbus/dbuswrite.cpp b/dbus/dbuswrite.cpp
index 880dea9..33ba730 100644
--- a/dbus/dbuswrite.cpp
+++ b/dbus/dbuswrite.cpp
@@ -89,7 +89,7 @@
         // TODO: if we don't use the reply, call_noreply()
         auto resp = writeBus.call(mesg);
     }
-    catch (const sdbusplus::exception::exception& ex)
+    catch (const sdbusplus::exception_t& ex)
     {
         log<level::ERR>("Dbus Call Failure", entry("PATH=%s", path.c_str()),
                         entry("WHAT=%s", ex.what()));
@@ -152,7 +152,7 @@
         // TODO: consider call_noreplly
         auto resp = writeBus.call(mesg);
     }
-    catch (const sdbusplus::exception::exception& ex)
+    catch (const sdbusplus::exception_t& ex)
     {
         log<level::ERR>("Dbus Call Failure", entry("PATH=%s", path.c_str()),
                         entry("WHAT=%s", ex.what()));