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: I8e2242adb79be342562c9b7f3d2153dfdf578085
diff --git a/pldmd/pldmd.cpp b/pldmd/pldmd.cpp
index 8e39a1f..1e7cd15 100644
--- a/pldmd/pldmd.cpp
+++ b/pldmd/pldmd.cpp
@@ -205,8 +205,8 @@
     }
     auto event = Event::get_default();
     auto& bus = pldm::utils::DBusHandler::getBus();
-    sdbusplus::server::manager::manager objManager(
-        bus, "/xyz/openbmc_project/software");
+    sdbusplus::server::manager_t objManager(bus,
+                                            "/xyz/openbmc_project/software");
     dbus_api::Requester dbusImplReq(bus, "/xyz/openbmc_project/pldm");
 
     Invoker invoker{};