message: Adding TargetVmSize for Vmware to azure and HyperV to Azure scenarios
diff: "targetAvailabilitySetId": {
  "description": "The availability set ARM Id.",
  "type": "string"
  + },
  + "targetVmSize": {
  + "description": "The target VM size.",
  + "type": "string"
  }
  },
  "x-ms-discriminator-value": "HyperVReplicaAzure"
  "targetAvailabilitySetId": {
  "description": "The availability set ARM Id.",
  "type": "string"
  + },
  + "targetVmSize": {
  + "description": "The target VM size.",
  + "type": "string"
  }
  },
  "x-ms-discriminator-value": "InMageAzureV2"
  