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/host_check.cpp b/host_check.cpp
index 7e6dbef..ced4ba3 100644
--- a/host_check.cpp
+++ b/host_check.cpp
@@ -46,7 +46,7 @@
 
 // Find all implementations of Condition interface and check if host is
 // running over it
-bool checkFirmwareConditionRunning(sdbusplus::bus::bus& bus)
+bool checkFirmwareConditionRunning(sdbusplus::bus_t& bus)
 {
     using FirmwareCondition = HostFirmware::FirmwareCondition;
     // Find all implementations of host firmware condition interface
@@ -63,7 +63,7 @@
         auto mapperResponseMsg = bus.call(mapper);
         mapperResponseMsg.read(mapperResponse);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         error(
             "Error in mapper GetSubTree call for HostFirmware condition: {ERROR}",
@@ -116,7 +116,7 @@
                     return true;
                 }
             }
-            catch (const sdbusplus::exception::exception& e)
+            catch (const sdbusplus::exception_t& e)
             {
                 error("Error reading HostFirmware condition, error: {ERROR}, "
                       "service: {SERVICE} path: {PATH}",
@@ -129,7 +129,7 @@
 }
 
 // Helper function to check if chassis power is on
-bool isChassiPowerOn(sdbusplus::bus::bus& bus, size_t id)
+bool isChassiPowerOn(sdbusplus::bus_t& bus, size_t id)
 {
     auto svcname = std::string{CHASSIS_STATE_SVC} + std::to_string(id);
     auto objpath = std::string{CHASSIS_STATE_PATH} + std::to_string(id);
@@ -153,7 +153,7 @@
             return true;
         }
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         error("Error reading Chassis Power State, error: {ERROR}, "
               "service: {SERVICE} path: {PATH}",