Move the monitor application to lg2

Update the logging API used for files in phosphor-fan-presence/monitor
from the older phosphor::logging::log to the more recent lg2::log.

Tested:
* Verified journal traces worked correctly in simulation.
* Modified json and simulation parameters to force various
  application errors and verified correct output and key/value
  pairs using journalctl.

Change-Id: Id6f5161edfd09b672aba8751a6d2c6518665188a
Signed-off-by: Anwaar Hadi <anwaar.hadi@ibm.com>
diff --git a/monitor/fan.cpp b/monitor/fan.cpp
index a9ca013..ab8d46d 100644
--- a/monitor/fan.cpp
+++ b/monitor/fan.cpp
@@ -21,7 +21,7 @@
 #include "types.hpp"
 #include "utility.hpp"
 
-#include <phosphor-logging/log.hpp>
+#include <phosphor-logging/lg2.hpp>
 
 #include <format>
 
@@ -439,7 +439,7 @@
 
         if (response.is_method_error())
         {
-            log<level::ERR>("Error in Notify call to update inventory");
+            lg2::error("Error in Notify call to update inventory");
 
             dbusError = true;
         }