Correct Actions/Manager.ResetToDefaults parameter name

According to the Redfish Data Model specification the correct parameter
name for the '/Actions/Manager.ResetToDefaults' action is not
'ResetToDefaults' but 'ResetType'.
The mistake was originally introduced in the commit "Redfish: Manager:
ResetToDefault" (3e40fc742265c3ec1384e7e5994e62aed356331f).
Change parameter name to match with the specification.
Leave some support for the old parameter name to keep the compatibility
with the old clients.

Tested:
The POST request
/redfish/v1/Managers/bmc/Actions/Manager.ResetToDefaults
with {"ResetType": "ResetAll"} body accepted successfully.

Redfish validator passed.

Change-Id: I6aab20314f85dbda16ad3758091de8822943b761
Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
diff --git a/redfish-core/lib/managers.hpp b/redfish-core/lib/managers.hpp
index c61132f..392d739 100644
--- a/redfish-core/lib/managers.hpp
+++ b/redfish-core/lib/managers.hpp
@@ -38,8 +38,10 @@
 #include <array>
 #include <cstdint>
 #include <memory>
+#include <optional>
 #include <ranges>
 #include <sstream>
+#include <string>
 #include <string_view>
 #include <variant>
 
@@ -186,25 +188,34 @@
         }
         BMCWEB_LOG_DEBUG("Post ResetToDefaults.");
 
-        std::string resetType;
+        std::optional<std::string> resetType;
+        std::optional<std::string> resetToDefaultsType;
 
-        if (!json_util::readJsonAction(req, asyncResp->res,
-                                       "ResetToDefaultsType", resetType))
+        if (!json_util::readJsonAction(req, asyncResp->res, "ResetType",
+                                       resetType, "ResetToDefaultsType",
+                                       resetToDefaultsType))
         {
-            BMCWEB_LOG_DEBUG("Missing property ResetToDefaultsType.");
+            BMCWEB_LOG_DEBUG("Missing property ResetType.");
 
             messages::actionParameterMissing(asyncResp->res, "ResetToDefaults",
-                                             "ResetToDefaultsType");
+                                             "ResetType");
             return;
         }
 
+        if (resetToDefaultsType && !resetType)
+        {
+            BMCWEB_LOG_WARNING(
+                "Using deprecated ResetToDefaultsType, should be ResetType."
+                "Support for the ResetToDefaultsType will be dropped in 2Q24");
+            resetType = resetToDefaultsType;
+        }
+
         if (resetType != "ResetAll")
         {
-            BMCWEB_LOG_DEBUG(
-                "Invalid property value for ResetToDefaultsType: {}",
-                resetType);
-            messages::actionParameterNotSupported(asyncResp->res, resetType,
-                                                  "ResetToDefaultsType");
+            BMCWEB_LOG_DEBUG("Invalid property value for ResetType: {}",
+                             *resetType);
+            messages::actionParameterNotSupported(asyncResp->res, *resetType,
+                                                  "ResetType");
             return;
         }