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: Ic63a70d32f4683e0bd92b625cc36c836aa8395a8
diff --git a/test/interface_ops_test.cpp b/test/interface_ops_test.cpp
index 3033423..b6d6ac8 100644
--- a/test/interface_ops_test.cpp
+++ b/test/interface_ops_test.cpp
@@ -52,7 +52,7 @@
 
 struct DummyInterfaceWithoutProperties
 {
-    DummyInterfaceWithoutProperties(sdbusplus::bus::bus&, const char* name)
+    DummyInterfaceWithoutProperties(sdbusplus::bus_t&, const char* name)
     {
         g_currentMock->constructWithoutProperties(name);
     }
@@ -62,7 +62,7 @@
 {
     using PropertiesVariant = FakeVariantType;
 
-    DummyInterfaceWithProperties(sdbusplus::bus::bus&, const char* name,
+    DummyInterfaceWithProperties(sdbusplus::bus_t&, const char* name,
                                  const InterfaceVariant& i, bool skipSignal)
     {
         g_currentMock->constructWithProperties(name, i, skipSignal);