Add x-ms-identifiers for AddOns (Azure#17567)

* adding xmsidentifiers for addons

* prettifying

* remove added properties

Author: agalerrotaru

specification/addons/resource-manager/Microsoft.Addons/preview/2018-03-01/addons-swagger.json

@@ -298,7 +298,8 @@
       "description": "The status of all Canonical support plans for a subscription.",
       "items": {
         "$ref": "#/definitions/CanonicalSupportPlanInfoDefinition"
-      }
+      },
+      "x-ms-identifiers": []
     },
     "CanonicalSupportPlanInfoDefinition": {
       "type": "object",
@@ -350,7 +351,10 @@
       "description": "List of supported operations.",
       "items": {
         "$ref": "#/definitions/OperationsDefinition"
-      }
+      },
+      "x-ms-identifiers": [
+        "name"
+      ]
     },
     "OperationsDefinition": {
       "type": "object",