ComputerSystem: fix ResetActionInfo

There is a regression that "Parameters" in ActionInfo now become an
object rather than an array, as defined in the Schema,
https://redfish.dmtf.org/schemas/ActionInfo.v1_2_0.json

Tested:
1. on my mock environment,
```
{
    "@odata.id": "/redfish/v1/Systems/system/ResetActionInfo",
    "@odata.type": "#ActionInfo.v1_1_2.ActionInfo",
    "Id": "ResetActionInfo",
    "Name": "Reset Action Info",
    "Parameters": [
        {
            "AllowableValues": [
                "On",
                "ForceOff",
                "ForceOn",
                "ForceRestart",
                "GracefulRestart",
                "GracefulShutdown",
                "PowerCycle",
                "Nmi"
            ],
            "DataType": "String",
            "Name": "ResetType",
            "Required": true
        }
    ]
}
```
2. Redfish Service Validator Passes
*** /redfish/v1/Systems/system/ResetActionInfo
Attempt 1 of /redfish/v1/Systems/system/ResetActionInfo
Response Time for GET to /redfish/v1/Systems/system/ResetActionInfo: 0.001620268914848566 seconds.
	 Type (ActionInfo.v1_1_2.ActionInfo), GET SUCCESS (time: 0:00:00.001832)
	 PASS

Signed-off-by: Nan Zhou <nanzhoumails@gmail.com>
Change-Id: I36db7fddaf565a2464378e31b18ecea688254f0e
Signed-off-by: Ed Tanous <edtanous@google.com>
diff --git a/redfish-core/lib/systems.hpp b/redfish-core/lib/systems.hpp
index 9aac379..4d37f5e 100644
--- a/redfish-core/lib/systems.hpp
+++ b/redfish-core/lib/systems.hpp
@@ -3083,18 +3083,26 @@
             "#ActionInfo.v1_1_2.ActionInfo";
         asyncResp->res.jsonValue["Name"] = "Reset Action Info";
         asyncResp->res.jsonValue["Id"] = "ResetActionInfo";
-        asyncResp->res.jsonValue["Parameters"]["Name"] = "ResetType";
-        asyncResp->res.jsonValue["Parameters"]["Required"] = true;
-        asyncResp->res.jsonValue["Parameters"]["DataType"] = "String";
-        asyncResp->res.jsonValue["Parameters"]["AllowableValues"] = {
-            "On",
-            "ForceOff",
-            "ForceOn",
-            "ForceRestart",
-            "GracefulRestart",
-            "GracefulShutdown",
-            "PowerCycle",
-            "Nmi"};
+
+        nlohmann::json::array_t parameters;
+        nlohmann::json::object_t parameter;
+
+        parameter["Name"] = "ResetType";
+        parameter["Required"] = true;
+        parameter["DataType"] = "String";
+        nlohmann::json::array_t allowableValues;
+        allowableValues.emplace_back("On");
+        allowableValues.emplace_back("ForceOff");
+        allowableValues.emplace_back("ForceOn");
+        allowableValues.emplace_back("ForceRestart");
+        allowableValues.emplace_back("GracefulRestart");
+        allowableValues.emplace_back("GracefulShutdown");
+        allowableValues.emplace_back("PowerCycle");
+        allowableValues.emplace_back("Nmi");
+        parameter["AllowableValues"] = std::move(allowableValues);
+        parameters.emplace_back(std::move(parameter));
+
+        asyncResp->res.jsonValue["Parameters"] = std::move(parameters);
         });
 }
 } // namespace redfish