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/remote_logging_tests.hpp b/test/remote_logging_tests.hpp
index d56a539..9c7e3a2 100644
--- a/test/remote_logging_tests.hpp
+++ b/test/remote_logging_tests.hpp
@@ -24,7 +24,7 @@
 class MockServer : public phosphor::rsyslog_config::Server
 {
   public:
-    MockServer(sdbusplus::bus::bus& bus, const std::string& path,
+    MockServer(sdbusplus::bus_t& bus, const std::string& path,
                const char* filePath) :
         phosphor::rsyslog_config::Server(bus, path, filePath)
     {