Move object_mapper per dbus path conventions.

Partial fix for openbmc/openbmc#1112.

Change-Id: I6cfa53d4cb6c24d29d60a83362e0da4ce501197e
Signed-off-by: Leonel Gonzalez <lgonzalez@us.ibm.com>
diff --git a/utils.cpp b/utils.cpp
index 1dbf594..efcc071 100644
--- a/utils.cpp
+++ b/utils.cpp
@@ -16,9 +16,9 @@
     auto bus = sdbusplus::bus::new_default();
     auto mapper =
         bus.new_method_call(
-            "xyz.openbmc_project.ObjectMapper",
-            "/xyz/openbmc_project/ObjectMapper",
-            "xyz.openbmc_project.ObjectMapper",
+            "xyz.openbmc_project.object_mapper",
+            "/xyz/openbmc_project/object_mapper",
+            "xyz.openbmc_project.object_mapper",
             "GetObject");
 
     mapper.append(pimPath);