Background scrip to Test IRE Simulation (#2379)

* Create script.js

* Create readme.md

Author: bharakm

Server-Side Components/Background Scripts/IRE Simulation/readme.md

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+Background script to test IRE simulation for specific CI .

Server-Side Components/Background Scripts/IRE Simulation/script.js

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+/*
+Add class name and provide name and short description.
+
+*/
+
+var payload = {
+    "items": [
+        {
+            "className": "cmdb_ci_linux_server",
+            "values": {
+                "name": "Test_Linux_001",
+                "short_description": "My New Description"
+            }
+        }
+    ]
+};
+var jsonUtil = new JSON();
+var input = jsonUtil.encode(payload);
+var output = SNC.IdentificationEngineScriptableApi.createOrUpdateCI('ServiceNow', input);
+gs.print(output);