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: Ibd2a0b512bfb7caf65bfab64b271d194da520aac
diff --git a/apphandler.cpp b/apphandler.cpp
index 8c81dc8..254697b 100644
--- a/apphandler.cpp
+++ b/apphandler.cpp
@@ -114,7 +114,7 @@
         objectTree =
             ipmi::getAllDbusObjects(*ctx->bus, softwareRoot, redundancyIntf);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>("Failed to fetch redundancy object from dbus",
                         entry("INTERFACE=%s", redundancyIntf),
@@ -178,7 +178,7 @@
 
 bool getCurrentBmcState()
 {
-    sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
+    sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
 
     // Get the Inventory object implementing the BMC interface
     ipmi::DbusObjectInfo bmcObject =
@@ -311,7 +311,7 @@
 {
     auto s = static_cast<uint8_t>(acpi_state::PowerState::unknown);
 
-    sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
+    sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
 
     auto value = acpi_state::ACPIPowerState::ACPI::Unknown;
 
@@ -431,7 +431,7 @@
     uint8_t sysAcpiState;
     uint8_t devAcpiState;
 
-    sdbusplus::bus::bus bus{ipmid_get_sd_bus_connection()};
+    sdbusplus::bus_t bus{ipmid_get_sd_bus_connection()};
 
     try
     {
@@ -942,7 +942,7 @@
             }
         }
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>("Failed to fetch object from dbus",
                         entry("INTERFACE=%s", session::sessionIntf),