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/hypervisor_state_manager.hpp b/hypervisor_state_manager.hpp
index 929c1aa..7b005f6 100644
--- a/hypervisor_state_manager.hpp
+++ b/hypervisor_state_manager.hpp
@@ -14,7 +14,7 @@
 namespace manager
 {
 
-using HypervisorInherit = sdbusplus::server::object::object<
+using HypervisorInherit = sdbusplus::server::object_t<
     sdbusplus::xyz::openbmc_project::State::server::Host>;
 
 namespace server = sdbusplus::xyz::openbmc_project::State::server;
@@ -40,7 +40,7 @@
      * @param[in] bus       - The Dbus bus object
      * @param[in] objPath   - The Dbus object path
      */
-    Hypervisor(sdbusplus::bus::bus& bus, const char* objPath) :
+    Hypervisor(sdbusplus::bus_t& bus, const char* objPath) :
         HypervisorInherit(bus, objPath,
                           HypervisorInherit::action::emit_object_added),
         bus(bus),
@@ -80,10 +80,10 @@
      * @param[in]  msg              - Data associated with subscribed signal
      *
      */
-    void bootProgressChangeEvent(sdbusplus::message::message& msg);
+    void bootProgressChangeEvent(sdbusplus::message_t& msg);
 
     /** @brief Persistent sdbusplus DBus bus connection. */
-    sdbusplus::bus::bus& bus;
+    sdbusplus::bus_t& bus;
 
     /** @brief Watch BootProgress changes to know hypervisor state **/
     sdbusplus::bus::match_t bootProgressChangeSignal;