util getservice api updates

Updated log messages to print input service and interface
details instead of predefined local information.

Signed-off-by: Jayanth Othayoth <ojayanth@in.ibm.com>
Change-Id: If5cd2f99ac0ebeed7b4de12ef0f94e55aabaebe7
diff --git a/util.cpp b/util.cpp
index ed4eed9..9a43a50 100644
--- a/util.cpp
+++ b/util.cpp
@@ -31,7 +31,7 @@
     {
         log<level::ERR>(fmt::format("D-Bus call exception OBJPATH={}"
                                     "INTERFACE={}  EXCEPTION={}",
-                                    mapperObjectPath, mapperInterface, e.what())
+                                    objectPath, interface, e.what())
                             .c_str());
 
         throw std::runtime_error("Service name is not found");