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: Ief1b330c4f623ecc1be771f36083780a12260834
diff --git a/src/network_manager.hpp b/src/network_manager.hpp
index f574891..7ca9939 100644
--- a/src/network_manager.hpp
+++ b/src/network_manager.hpp
@@ -29,7 +29,7 @@
 {
 
 template <typename T, typename U>
-using ServerObject = typename sdbusplus::server::object::object<T, U>;
+using ServerObject = typename sdbusplus::server::object_t<T, U>;
 
 using VLANCreateIface = details::ServerObject<
     sdbusplus::xyz::openbmc_project::Network::VLAN::server::Create,
@@ -55,8 +55,7 @@
      *  @param[in] objPath - Path to attach at.
      *  @param[in] dir - Network Configuration directory path.
      */
-    Manager(sdbusplus::bus::bus& bus, const char* objPath,
-            const std::string& dir);
+    Manager(sdbusplus::bus_t& bus, const char* objPath, const std::string& dir);
 
     ObjectPath vlan(IntfName interfaceName, uint32_t id) override;
 
@@ -173,7 +172,7 @@
 
   protected:
     /** @brief Persistent sdbusplus DBus bus connection. */
-    sdbusplus::bus::bus& bus;
+    sdbusplus::bus_t& bus;
 
     /** @brief Persistent map of EthernetInterface dbus objects and their names
      */