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: I2d7ce287e0adc0be60796a80e9bb4cca908434ce
diff --git a/nvme_main.cpp b/nvme_main.cpp
index 8552593..c9e3a96 100644
--- a/nvme_main.cpp
+++ b/nvme_main.cpp
@@ -13,7 +13,7 @@
 int main(void)
 {
 
-    sdbusplus::bus::bus bus = sdbusplus::bus::new_default();
+    sdbusplus::bus_t bus = sdbusplus::bus::new_default();
 
     sd_event* event = nullptr;
     auto eventDeleter = [](sd_event* e) { e = sd_event_unref(e); };
@@ -25,7 +25,7 @@
     // attach bus to this event loop
     bus.attach_event(sdEvent.get(), SD_EVENT_PRIORITY_NORMAL);
 
-    sdbusplus::server::manager::manager objManager(bus, NVME_OBJ_PATH_ROOT);
+    sdbusplus::server::manager_t objManager(bus, NVME_OBJ_PATH_ROOT);
 
     phosphor::nvme::Nvme objMgr(bus);
 
diff --git a/nvme_manager.hpp b/nvme_manager.hpp
index 391a768..0ee23df 100644
--- a/nvme_manager.hpp
+++ b/nvme_manager.hpp
@@ -35,7 +35,7 @@
      * @param[in] bus     - Handle to system dbus
      * @param[in] objPath - The dbus path of nvme
      */
-    Nvme(sdbusplus::bus::bus& bus) :
+    Nvme(sdbusplus::bus_t& bus) :
         bus(bus), _event(sdeventplus::Event::get_default()),
         _timer(_event, std::bind(&Nvme::read, this))
     {
@@ -134,7 +134,7 @@
 
   private:
     /** @brief sdbusplus bus client connection. */
-    sdbusplus::bus::bus& bus;
+    sdbusplus::bus_t& bus;
     /** @brief the Event Loop structure */
     sdeventplus::Event _event;
     /** @brief Read Timer */
diff --git a/nvmes.hpp b/nvmes.hpp
index 436dd38..e11c891 100644
--- a/nvmes.hpp
+++ b/nvmes.hpp
@@ -18,9 +18,8 @@
 using WarningInterface =
     sdbusplus::xyz::openbmc_project::Sensor::Threshold::server::Warning;
 
-using NvmeIfaces =
-    sdbusplus::server::object::object<ValueIface, CriticalInterface,
-                                      WarningInterface>;
+using NvmeIfaces = sdbusplus::server::object_t<ValueIface, CriticalInterface,
+                                               WarningInterface>;
 
 class NvmeSSD : public NvmeIfaces
 {
@@ -37,7 +36,7 @@
      * @param[in] bus     - Handle to system dbus
      * @param[in] objPath - The Dbus path of nvme
      */
-    NvmeSSD(sdbusplus::bus::bus& bus, const char* objPath) :
+    NvmeSSD(sdbusplus::bus_t& bus, const char* objPath) :
         NvmeIfaces(bus, objPath), bus(bus)
     {
         ValueIface::unit(Unit::DegreesC);
@@ -54,7 +53,7 @@
     void setSensorMaxMin(int8_t maxValue, int8_t minValue);
 
   private:
-    sdbusplus::bus::bus& bus;
+    sdbusplus::bus_t& bus;
 };
 } // namespace nvme
 } // namespace phosphor
diff --git a/sdbusplus.hpp b/sdbusplus.hpp
index 186a88d..c0a1848 100644
--- a/sdbusplus.hpp
+++ b/sdbusplus.hpp
@@ -20,10 +20,10 @@
 {
   public:
     template <typename T>
-    static auto
-        setProperty(sdbusplus::bus::bus& bus, const std::string& busName,
-                    const std::string& objPath, const std::string& interface,
-                    const std::string& property, const T& value)
+    static auto setProperty(sdbusplus::bus_t& bus, const std::string& busName,
+                            const std::string& objPath,
+                            const std::string& interface,
+                            const std::string& property, const T& value)
     {
         std::variant<T> data = value;
 
@@ -47,10 +47,10 @@
     }
 
     template <typename Property>
-    static auto
-        getProperty(sdbusplus::bus::bus& bus, const std::string& busName,
-                    const std::string& objPath, const std::string& interface,
-                    const std::string& property)
+    static auto getProperty(sdbusplus::bus_t& bus, const std::string& busName,
+                            const std::string& objPath,
+                            const std::string& interface,
+                            const std::string& property)
     {
         auto methodCall = bus.new_method_call(busName.c_str(), objPath.c_str(),
                                               DBUS_PROPERTY_IFACE, "Get");
@@ -76,7 +76,7 @@
     }
 
     template <typename... Args>
-    static auto CallMethod(sdbusplus::bus::bus& bus, const std::string& busName,
+    static auto CallMethod(sdbusplus::bus_t& bus, const std::string& busName,
                            const std::string& objPath,
                            const std::string& interface,
                            const std::string& method, Args&&... args)