message: Fix swagger correctness for appplatform 2021-06-01-preview
diff: "properties": {
  "serviceRuntimeSubnetId": {
  "description": "Fully qualified resource Id of the subnet to host Azure Spring Cloud Service Runtime",
  - "type": "string"
  + "type": "string",
  + "x-ms-mutability": [
  + "create",
  + "read"
  + ]
  },
  "appSubnetId": {
  "description": "Fully qualified resource Id of the subnet to host Azure Spring Cloud Apps",
  - "type": "string"
  + "type": "string",
  + "x-ms-mutability": [
  + "create",
  + "read"
  + ]
  },
  "serviceCidr": {
  "description": "Azure Spring Cloud service reserved CIDR",
  - "type": "string"
  + "type": "string",
  + "x-ms-mutability": [
  + "create",
  + "read"
  + ]
  },
  "serviceRuntimeNetworkResourceGroup": {
  "description": "Name of the resource group containing network resources of Azure Spring Cloud Service Runtime",
  - "type": "string"
  + "type": "string",
  + "x-ms-mutability": [
  + "create",
  + "read"
  + ]
  },
  "appNetworkResourceGroup": {
  "description": "Name of the resource group containing network resources of Azure Spring Cloud Apps",
  - "type": "string"
  + "type": "string",
  + "x-ms-mutability": [
  + "create",
  + "read"
  + ]
  },
  "outboundIPs": {
  "description": "Desired outbound IP resources for Azure Spring Cloud instance.",
  },
  "fqdn": {
  "description": "Fully qualified dns Name.",
  - "type": "string"
  + "type": "string",
  + "x-ms-mutability": [
  + "create",
  + "read"
  + ]
  },
  "httpsOnly": {
  "description": "Indicate if only https is allowed.",
  - "type": "boolean"
  + "type": "boolean",
  + "default": false
  },
  "createdTime": {
  "format": "date-time",
  },
  "enableEndToEndTLS": {
  "description": "Indicate if end to end TLS is enabled.",
  - "type": "boolean"
  + "type": "boolean",
  + "default": false
  }
  }
  },
  },
  "mountPath": {
  "description": "Mount path of the temporary disk",
  - "type": "string"
  + "type": "string",
  + "default": "/tmp"
  }
  }
  },
  },
  "runtimeVersion": {
  "description": "Runtime version",
  + "default": "Java_8",
  "enum": [
  "Java_8",
  "Java_11",
  