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: I41103c892db258a85640aa1442acd9a295c8a847
diff --git a/secure_boot_check.cpp b/secure_boot_check.cpp
index 877b318..fc5cec0 100644
--- a/secure_boot_check.cpp
+++ b/secure_boot_check.cpp
@@ -36,7 +36,7 @@
         auto reply = bus.call(method);
         reply.read(mfgModeEnabled);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         error("Error in property Get, error {ERROR}, property {PROPERTY}",
               "ERROR", e, "PROPERTY", propertyName);