Add ObjectManager in the right place

Per
https://gerrit.openbmc.org/c/openbmc/phosphor-dbus-interfaces/+/55308
dbus-sensors has been putting the ObjectManager in the wrong place.  Fix
that.

Tested:
Loaded build with all patches under this same topic, and observed IPMI
and Redfish trees working correctly and responding with sensor data.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Iefe050fe50658de6e1f215eab95b1f772e50eb4a
diff --git a/src/IntrusionSensorMain.cpp b/src/IntrusionSensorMain.cpp
index f46254f..3b63b6e 100644
--- a/src/IntrusionSensorMain.cpp
+++ b/src/IntrusionSensorMain.cpp
@@ -419,11 +419,14 @@
     // setup connection to dbus
     boost::asio::io_service io;
     auto systemBus = std::make_shared<sdbusplus::asio::connection>(io);
-    auto objServer = sdbusplus::asio::object_server(systemBus);
 
     // setup object server, define interface
     systemBus->request_name("xyz.openbmc_project.IntrusionSensor");
 
+    sdbusplus::asio::object_server objServer(systemBus, true);
+
+    objServer.add_manager("/xyz/openbmc_project/sensors");
+
     std::shared_ptr<sdbusplus::asio::dbus_interface> ifaceChassis =
         objServer.add_interface(
             "/xyz/openbmc_project/Intrusion/Chassis_Intrusion",