Add async operation's api to storage cache RP

specification/storagecache/resource-manager/Microsoft.StorageCache/stable/2020-03-01/examples/AscOperations_Get.json

@@ -0,0 +1,20 @@
+{
+  "parameters": {
+    "subscriptionId": "613192d7-503f-477a-9cfe-4efc3ee2bd60",
+    "location": "West US",
+    "operationId": "testoperationid",
+    "api-version": "2020-03-01"
+  },
+  "responses": {
+    "200": {
+      "headers": {},
+      "body": {
+        "id": "/subscriptions/id/locations/westus/ascOperations/testoperationid",
+        "name": "testoperationid",
+        "startTime": "2020-03-01T13:13:13.933Z",
+        "endTime": "2020-03-01T16:13:13.933Z",
+        "status": "Succeeded"
+      }
+    }
+  }
+}

specification/storagecache/resource-manager/Microsoft.StorageCache/stable/2020-03-01/storagecache.json

@@ -158,6 +158,59 @@
         "operationId": "UsageModels_List"
       }
     },
+    "/subscriptions/{subscriptionId}/providers/Microsoft.StorageCache/locations/{location}/ascOperations/{operationId}": {
+      "get": {
+        "produces": [
+          "application/json"
+        ],
+        "parameters": [
+          {
+            "$ref": "#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/SubscriptionIdParameter"
+          },
+          {
+            "name": "location",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The region name which the operation will lookup into."
+          },
+          {
+            "name": "operationId",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The operation id which uniquely identifies the asynchronous operation."
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Gets the status of an asynchronous operation for the Azure HPC cache",
+            "schema": {
+              "$ref": "#/definitions/AscOperation"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/CloudError"
+            }
+          }
+        },
+        "x-ms-examples": {
+          "AscOperations_Get": {
+            "$ref": "./examples/AscOperations_Get.json"
+          }
+        },
+        "tags": [
+          "AscOperations"
+        ],
+        "description": "Gets the status of an asynchronous operation for the Azure HPC cache",
+        "operationId": "AscOperations_Get"
+      }
+    },
     "/subscriptions/{subscriptionId}/providers/Microsoft.StorageCache/caches": {
       "get": {
         "produces": [
@@ -1097,6 +1150,51 @@
       },
       "type": "object"
     },
+    "AscOperation": {
+      "description": "The status of operation.",
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string",
+          "description": "The operation Id."
+        },
+        "name": {
+          "type": "string",
+          "description": "The operation name."
+        },
+        "startTime": {
+          "type": "string",
+          "description": "The start time of the operation."
+        },
+        "endTime": {
+          "type": "string",
+          "description": "The end time of the operation."
+        },
+        "status": {
+          "type": "string",
+          "description": "The status of the operation."
+        },
+        "error": {
+          "type": "object",
+          "description": "The error detail of the operation if any.",
+          "$ref": "#/definitions/ErrorResponse"
+        }
+      }
+    },
+    "ErrorResponse": {
+      "description": "Describes the format of Error response.",
+      "type": "object",
+      "properties": {
+        "code": {
+          "description": "Error code",
+          "type": "string"
+        },
+        "message": {
+          "description": "Error message indicating why the operation failed.",
+          "type": "string"
+        }
+      }
+    },
     "Cache": {
       "description": "A Cache instance. Follows Azure Resource Manager standards: https://github.com/Azure/azure-resource-manager-rpc/blob/master/v1.0/resource-api-reference.md",
       "properties": {