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: I9029cc722e7712633c15436bd3868d8c3209f567
diff --git a/monitor/conditions.cpp b/monitor/conditions.cpp
index 19e9cd8..62e272c 100644
--- a/monitor/conditions.cpp
+++ b/monitor/conditions.cpp
@@ -22,7 +22,7 @@
 
 Condition propertiesMatch(std::vector<PropertyState>&& propStates)
 {
-    return [pStates = std::move(propStates)](sdbusplus::bus::bus& bus) {
+    return [pStates = std::move(propStates)](sdbusplus::bus_t& bus) {
         return std::all_of(
             pStates.begin(), pStates.end(), [&bus](const auto& p) {
                 return util::SDBusPlus::getPropertyVariant<PropertyValue>(