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/system_dump_entry.hpp b/dump-extensions/openpower-dumps/system_dump_entry.hpp
index f09fafc..bc247c9 100644
--- a/dump-extensions/openpower-dumps/system_dump_entry.hpp
+++ b/dump-extensions/openpower-dumps/system_dump_entry.hpp
@@ -13,9 +13,9 @@
 namespace system
 {
 template <typename T>
-using ServerObject = typename sdbusplus::server::object::object<T>;
+using ServerObject = typename sdbusplus::server::object_t<T>;
 
-using EntryIfaces = sdbusplus::server::object::object<
+using EntryIfaces = sdbusplus::server::object_t<
     sdbusplus::xyz::openbmc_project::Dump::Entry::server::System>;
 
 class Manager;
@@ -46,7 +46,7 @@
      *  @param[in] status - status  of the dump.
      *  @param[in] parent - The dump entry's parent.
      */
-    Entry(sdbusplus::bus::bus& bus, const std::string& objPath, uint32_t dumpId,
+    Entry(sdbusplus::bus_t& bus, const std::string& objPath, uint32_t dumpId,
           uint64_t timeStamp, uint64_t dumpSize, const uint32_t sourceId,
           phosphor::dump::OperationStatus status,
           phosphor::dump::Manager& parent) :