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: I7ae6214461bdf45c1a21fb702cc8bf5578d827c6
diff --git a/dump-extensions/openpower-dumps/dump_manager_system.hpp b/dump-extensions/openpower-dumps/dump_manager_system.hpp
index 7170b3f..5ea4deb 100644
--- a/dump-extensions/openpower-dumps/dump_manager_system.hpp
+++ b/dump-extensions/openpower-dumps/dump_manager_system.hpp
@@ -16,7 +16,7 @@
 {
 
 constexpr uint32_t INVALID_SOURCE_ID = 0xFFFFFFFF;
-using NotifyIface = sdbusplus::server::object::object<
+using NotifyIface = sdbusplus::server::object_t<
     sdbusplus::xyz::openbmc_project::Dump::server::Create,
     sdbusplus::xyz::openbmc_project::Dump::server::NewDump>;
 
@@ -43,7 +43,7 @@
      *  @param[in] path - Path to attach at.
      *  @param[in] baseEntryPath - Base path of the dump entry.
      */
-    Manager(sdbusplus::bus::bus& bus, const char* path,
+    Manager(sdbusplus::bus_t& bus, const char* path,
             const std::string& baseEntryPath) :
         NotifyIface(bus, path),
         phosphor::dump::Manager(bus, path, baseEntryPath)