Support FRUs populated to the Entity Manager

Currently if IPMI is configured via YAML files, only FRUs populated
to the Inventory.Manager are supported.
This patch adds support for the FRUs found by the FruDevice app and
populated to the EntityManager.

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
Change-Id: I02f51ea29ba22a56a4811cfb53637692a1dfb734
diff --git a/storagehandler.cpp b/storagehandler.cpp
index 690ea42..6775572 100644
--- a/storagehandler.cpp
+++ b/storagehandler.cpp
@@ -715,6 +715,19 @@
             return result;
         }
     }
+
+    ipmi::ObjectValueTree managedObjects;
+    ec = getManagedObjects(ctx, "xyz.openbmc_project.EntityManager", "/",
+                           managedObjects);
+    if (!ec)
+    {
+        auto connection = managedObjects.find(fruPath);
+        if (connection != managedObjects.end())
+        {
+            return true;
+        }
+    }
+
     return false;
 }