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: I0eb22958103519924e336a2260a4d48015848c3e
diff --git a/vpd_tool_impl.cpp b/vpd_tool_impl.cpp
index 2d777e9..c52511f 100644
--- a/vpd_tool_impl.cpp
+++ b/vpd_tool_impl.cpp
@@ -131,7 +131,7 @@
                 kwVal.emplace(kw, printableVal);
             }
         }
-        catch (const sdbusplus::exception::exception& e)
+        catch (const sdbusplus::exception_t& e)
         {
             if (string(e.name()) ==
                 string("org.freedesktop.DBus.Error.UnknownObject"))
@@ -166,7 +166,7 @@
                 output.emplace(kw, *str);
             }
         }
-        catch (const sdbusplus::exception::exception& e)
+        catch (const sdbusplus::exception_t& e)
         {
             if (std::string(e.name()) ==
                 std::string("org.freedesktop.DBus.Error.UnknownObject"))