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: Ibc25db433a6926f7ee43ea83312c3ac14f480c33
diff --git a/test/elog_errorwrap_test.hpp b/test/elog_errorwrap_test.hpp
index d5a4b33..553e2e8 100644
--- a/test/elog_errorwrap_test.hpp
+++ b/test/elog_errorwrap_test.hpp
@@ -68,7 +68,7 @@
 class MockJournal : public Manager
 {
   public:
-    MockJournal(sdbusplus::bus::bus& bus, const char* objPath) :
+    MockJournal(sdbusplus::bus_t& bus, const char* objPath) :
         Manager(bus, objPath){};
     MOCK_METHOD0(journalSync, void());
     MOCK_METHOD2(sd_journal_open, int(sd_journal**, int));
@@ -80,7 +80,7 @@
 class TestLogManager : public testing::Test
 {
   public:
-    sdbusplus::bus::bus bus;
+    sdbusplus::bus_t bus;
     MockJournal manager;
     TestLogManager() :
         bus(sdbusplus::bus::new_default()),