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: I9541d521bf67882215a4a66dce020e38ac2df065
diff --git a/powercap.cpp b/powercap.cpp
index 20a8f47..6a9c67f 100644
--- a/powercap.cpp
+++ b/powercap.cpp
@@ -142,7 +142,7 @@
                 auto occInput = getOccInput(newCap, pcapEnabled);
                 writeOcc(occInput);
             }
-            catch (const sdbusplus::exception::exception& e)
+            catch (const sdbusplus::exception_t& e)
             {
                 log<level::ERR>(
                     fmt::format(
@@ -177,7 +177,7 @@
 
         return std::get<uint32_t>(pcap);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>("Failed to get PowerCap property",
                         entry("ERROR=%s", e.what()),
@@ -197,7 +197,7 @@
 
         return std::get<bool>(pcapEnabled);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>("Failed to get PowerCapEnable property",
                         entry("ERROR=%s", e.what()),
@@ -320,7 +320,7 @@
     return userCap;
 }
 
-void PowerCap::pcapChanged(sdbusplus::message::message& msg)
+void PowerCap::pcapChanged(sdbusplus::message_t& msg)
 {
     if (!occStatus.occActive())
     {
@@ -413,7 +413,7 @@
         utils::setProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_SOFT_MIN,
                            softMin);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>(
             fmt::format(
@@ -428,7 +428,7 @@
         utils::setProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_HARD_MIN,
                            hardMin);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>(
             fmt::format(
@@ -442,7 +442,7 @@
     {
         utils::setProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_MAX, max);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>(
             fmt::format(
@@ -468,7 +468,7 @@
             utils::getProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_SOFT_MIN);
         softMin = std::get<uint32_t>(prop);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>(
             fmt::format("readDbusPcapLimits: Failed to get SOFT PCAP due to {}",
@@ -484,7 +484,7 @@
             utils::getProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_HARD_MIN);
         hardMin = std::get<uint32_t>(prop);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>(
             fmt::format("readDbusPcapLimits: Failed to get HARD PCAP due to {}",
@@ -499,7 +499,7 @@
         prop = utils::getProperty(PCAP_PATH, PCAP_INTERFACE, POWER_CAP_MAX);
         max = std::get<uint32_t>(prop);
     }
-    catch (const sdbusplus::exception::exception& e)
+    catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>(
             fmt::format("readDbusPcapLimits: Failed to get MAX PCAP due to {}",