message: update to 2019-10-01
diff: "endpointType": {
  "type": "string",
  "description": "Indicates whether the local volume is the source or destination for the Volume Replication",
  - "example": "src, dst"
  + "enum": [
  + "src",
  + "dst"
  + ],
  + "x-ms-enum": {
  + "name": "EndointType",
  + "modelAsString": true
  + }
  },
  "replicationSchedule": {
  "type": "string",
  