message: Added Mising publicNetworkAccess property
diff: "alternateName": {
  "type": "string",
  "description": "Alternate name for namespace"
  + },
  + "publicNetworkAccess": {
  + "description": "This determines if traffic is allowed over public network. By default it is enabled.",
  + "enum": [
  + "Enabled",
  + "Disabled",
  + "SecuredByPerimeter"
  + ],
  + "type": "string",
  + "x-ms-enum": {
  + "name": "PublicNetworkAccess",
  + "modelAsString": true
  + },
  + "default": "Enabled"
  }
  },
  "description": "Properties of the namespace."
  