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

Change-Id: Ieff0241e0cd818d95cb42fac5a10c65efa99fde9
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/include/host_error_monitor.hpp b/include/host_error_monitor.hpp
index 0710ff2..a7710f9 100644
--- a/include/host_error_monitor.hpp
+++ b/include/host_error_monitor.hpp
@@ -101,15 +101,15 @@
     static RecoveryType recovery;
     recovery = requestedRecovery;
     std::cerr << "Starting crashdump\n";
-    static std::shared_ptr<sdbusplus::bus::match::match> crashdumpCompleteMatch;
+    static std::shared_ptr<sdbusplus::bus::match_t> crashdumpCompleteMatch;
 
     if (!crashdumpCompleteMatch)
     {
-        crashdumpCompleteMatch = std::make_shared<sdbusplus::bus::match::match>(
+        crashdumpCompleteMatch = std::make_shared<sdbusplus::bus::match_t>(
             *conn,
             "type='signal',interface='com.intel.crashdump',member='"
             "CrashdumpComplete'",
-            [conn](sdbusplus::message::message& /*msg*/) {
+            [conn](sdbusplus::message_t& /*msg*/) {
                 std::cerr << "Crashdump completed\n";
                 handleRecovery(recovery, conn);
                 crashdumpCompleteMatch.reset();
diff --git a/src/host_error_monitor.cpp b/src/host_error_monitor.cpp
index 998f748..00177b9 100644
--- a/src/host_error_monitor.cpp
+++ b/src/host_error_monitor.cpp
@@ -72,13 +72,13 @@
         "xyz.openbmc_project.State.Host", "CurrentHostState");
 }
 
-static std::shared_ptr<sdbusplus::bus::match::match> startHostStateMonitor()
+static std::shared_ptr<sdbusplus::bus::match_t> startHostStateMonitor()
 {
-    return std::make_shared<sdbusplus::bus::match::match>(
+    return std::make_shared<sdbusplus::bus::match_t>(
         *conn,
         "type='signal',interface='org.freedesktop.DBus.Properties',"
         "member='PropertiesChanged',arg0='xyz.openbmc_project.State.Host'",
-        [](sdbusplus::message::message& msg) {
+        [](sdbusplus::message_t& msg) {
             std::string interfaceName;
             boost::container::flat_map<std::string, std::variant<std::string>>
                 propertiesChanged;
@@ -132,7 +132,7 @@
         sdbusplus::asio::object_server(host_error_monitor::conn);
 
     // Start tracking host state
-    std::shared_ptr<sdbusplus::bus::match::match> hostStateMonitor =
+    std::shared_ptr<sdbusplus::bus::match_t> hostStateMonitor =
         host_error_monitor::startHostStateMonitor();
 
     // Initialize the signal monitors