Add autoIoScaling property in MySQL get/update payload (#21039)

Co-authored-by: Bin Xu <[email protected]>

Author: xuubin

specification/mysql/resource-manager/Microsoft.DBforMySQL/preview/2021-12-01-preview/FlexibleServers.json

@@ -697,6 +697,10 @@
           "type": "string",
           "readOnly": true,
           "description": "The sku name of the server storage."
+        },
+        "autoIoScaling": {
+          "description": "Enable IO Auto Scaling or not.",
+          "$ref": "#/definitions/EnableStatusEnum"
         }
       },
       "description": "Storage Profile properties of a server"

specification/mysql/resource-manager/Microsoft.DBforMySQL/preview/2021-12-01-preview/examples/ServerGet.json

@@ -18,6 +18,7 @@
             "storageSizeGB": 100,
             "iops": 600,
             "autoGrow": "Enabled",
+            "autoIoScaling": "Enabled",
             "storageSku": "Premium_LRS"
           },
           "version": "5.7",

specification/mysql/resource-manager/Microsoft.DBforMySQL/preview/2021-12-01-preview/examples/ServerUpdate.json

@@ -9,7 +9,8 @@
         "storage": {
           "storageSizeGB": 30,
           "iops": 200,
-          "autoGrow": "Disabled"
+          "autoGrow": "Disabled",
+          "autoIoScaling": "Disabled"
         }
       }
     }
@@ -27,7 +28,8 @@
             "storageSizeGB": 30,
             "iops": 200,
             "autoGrow": "Disabled",
-            "storageSku": "Premium_LRS"
+            "storageSku": "Premium_LRS",
+            "autoIoScaling": "Disabled"
           },
           "version": "5.7",
           "state": "Ready",