message: Add enableAutomaticUpgrade property to VMExtensions for VMs and VMSS
diff: "type": "boolean",
  "description": "Indicates whether the extension should use a newer minor version if one is available at deployment time. Once deployed, however, the extension will not upgrade minor versions unless redeployed, even with this property set to true."
  },
  + "enableAutomaticUpgrade": {
  + "type": "boolean",
  + "description": "Indicates whether the extension should be automatically upgraded by the platform if there is a newer version of the extension available."
  + },
  "settings": {
  "type": "object",
  "description": "Json formatted public settings for the extension."
  "type": "boolean",
  "description": "Indicates whether the extension should use a newer minor version if one is available at deployment time. Once deployed, however, the extension will not upgrade minor versions unless redeployed, even with this property set to true."
  },
  + "enableAutomaticUpgrade": {
  + "type": "boolean",
  + "description": "Indicates whether the extension should be automatically upgraded by the platform if there is a newer version of the extension available."
  + },
  "settings": {
  "type": "object",
  "description": "Json formatted public settings for the extension."
  "type": "boolean",
  "description": "Indicates whether the extension should use a newer minor version if one is available at deployment time. Once deployed, however, the extension will not upgrade minor versions unless redeployed, even with this property set to true."
  },
  + "enableAutomaticUpgrade": {
  + "type": "boolean",
  + "description": "Indicates whether the extension should be automatically upgraded by the platform if there is a newer version of the extension available."
  + },
  "settings": {
  "type": "object",
  "description": "Json formatted public settings for the extension."
  