Set ExpandQuery MaxLevels to 0 in Redfish ServiceRoot

MaxLevels was accidentally set to 1 before. We need to set it to 0 to show it dosent support expand.

Google-Bug-Id:553082322
PiperOrigin-RevId: 972173681
Change-Id: I65d6d725ff235d79ed32d180338735f15753d4c7

redfish-core/lib/service_root.hpp

diff --git a/redfish-core/lib/service_root.hpp b/redfish-core/lib/service_root.hpp
index 412334c..294407d 100644
--- a/redfish-core/lib/service_root.hpp
+++ b/redfish-core/lib/service_root.hpp
@@ -106,7 +106,7 @@
           protocolFeatures["ExpandQuery"]["ExpandAll"] = false;
           protocolFeatures["ExpandQuery"]["Levels"] = false;
           protocolFeatures["ExpandQuery"]["Links"] = false;
-          protocolFeatures["ExpandQuery"]["MaxLevels"] = 1;
+          protocolFeatures["ExpandQuery"]["MaxLevels"] = 0;
           protocolFeatures["ExpandQuery"]["NoLinks"] = false;
           return;
         }

test/redfish-core/lib/service_root_test.cpp

diff --git a/test/redfish-core/lib/service_root_test.cpp b/test/redfish-core/lib/service_root_test.cpp
index 4485371..2b486c0 100644
--- a/test/redfish-core/lib/service_root_test.cpp
+++ b/test/redfish-core/lib/service_root_test.cpp
@@ -142,7 +142,7 @@
               "ExpandAll": false,
               "Levels": false,
               "Links": false,
-              "MaxLevels": 1,
+              "MaxLevels": 0,
               "NoLinks": false
             })"));
 }