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: I96286490697ce5d7fecc1c9c358f5f1d054137ec
diff --git a/utils.hpp b/utils.hpp
index 2174938..af6dd98 100644
--- a/utils.hpp
+++ b/utils.hpp
@@ -16,7 +16,7 @@
  *
  * @return the bus service as a string
  **/
-std::string getService(sdbusplus::bus::bus& bus, const std::string& path,
+std::string getService(sdbusplus::bus_t& bus, const std::string& path,
                        const std::string& interface);
 
 /** @brief Get property(type: variant)
@@ -28,10 +28,10 @@
  *
  *  @return The value of the property(type: variant)
  *
- *  @throw sdbusplus::exception::exception when it fails
+ *  @throw sdbusplus::exception_t when it fails
  */
 template <typename T>
-T getProperty(sdbusplus::bus::bus& bus, const std::string& objectPath,
+T getProperty(sdbusplus::bus_t& bus, const std::string& objectPath,
               const std::string& interface, const std::string& propertyName)
 {
     std::variant<T> value{};
@@ -59,9 +59,9 @@
  *  @param[in] propertyName     -   D-Bus property name
  *  @param[in] value            -   The value to be set
  *
- *  @throw sdbusplus::exception::exception when it fails
+ *  @throw sdbusplus::exception_t when it fails
  */
-void setProperty(sdbusplus::bus::bus& bus, const std::string& objectPath,
+void setProperty(sdbusplus::bus_t& bus, const std::string& objectPath,
                  const std::string& interface, const std::string& propertyName,
                  const PropertyValue& value);