Fix for defect 609923

Updates to resolve getting a response for wrong URI in Update
Service URI (/redfish/v1/UpdateService/FirmwareInventory/)

After the fix a wrong URI that partially matches the last
characters in a valid URI now gets a 404 as shown below

curl -k -H "X-Auth-Token: $bmc_token" -X GET https://$bmc_ip/redfish/v1/UpdateService/FirmwareInventory/b8
{
  "@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/b8",
  "error": {
    "@Message.ExtendedInfo": [
      {
        "@odata.type": "#Message.v1_1_1.Message",
        "Message": "The resource at the URI '/redfish/v1/UpdateService/FirmwareInventory/b8' was not found.",
        "MessageArgs": [
          "/redfish/v1/UpdateService/FirmwareInventory/b8"
        ],
        "MessageId": "Base.1.19.ResourceMissingAtURI",
        "MessageSeverity": "Critical",
        "Resolution": "Place a valid resource at the URI or correct the URI and resubmit the request."
      }
    ],
    "code": "Base.1.19.ResourceMissingAtURI",
    "message": "The resource at the URI '/redfish/v1/UpdateService/FirmwareInventory/b8' was not found."
  }
}

redfish-core/lib/update_service.hpp

@@ -1233,7 +1233,7 @@ inline void requestRoutesSoftwareInventory(App& app)
             constexpr std::array<std::string_view, 1> interfaces = {
                 "xyz.openbmc_project.Software.Version"};
             dbus::utility::getSubTree(
-                "/", 0, interfaces,
+                "/xyz/openbmc_project/software/", 0, interfaces,
                 [asyncResp,
                  swId](const boost::system::error_code& ec,
                        const dbus::utility::MapperGetSubTreeResponse& subtree) {
@@ -1252,16 +1252,21 @@ inline void requestRoutesSoftwareInventory(App& app)
                                  std::string, std::vector<std::string>>>>& obj :
                          subtree)
                     {
-                        if (!obj.first.ends_with(*swId))
+                        sdbusplus::message::object_path path(obj.first);
+                        std::string id = path.filename();
+                        if (id.empty())
+                        {
+                            BMCWEB_LOG_DEBUG("Failed to find software id in {}", obj.first);
+                            continue;
+                        }
+                        if (id != *swId)
                         {
                             continue;
                         }
-
                         if (obj.second.empty())
                         {
                             continue;
                         }
-
                         found = true;
                         sw_util::getSwStatus(asyncResp, swId,
                                              obj.second[0].first);