[
  {
    "ParameterKey": "KeyName",
    "ParameterValue": "cikey"
  }, 
  {
    "ParameterKey": "AvailabilityZone0",
    "ParameterValue": "sa-east-1c"
  },
  {
    "ParameterKey": "AvailabilityZone1",
    "ParameterValue": "sa-east-1b"
  },
  {
    "ParameterKey": "AvailabilityZone2",
    "ParameterValue": "sa-east-1c"
  }
]

[
  {
    "ParameterKey": "KeyName",
    "ParameterValue": "cikey"
  }, 
  {
    "ParameterKey": "AvailabilityZone0",
    "ParameterValue": "sa-east-1c"
  },
  {
    "ParameterKey": "NodeInstanceType",
    "ParameterValue": "m3.medium"
  },
  {
    "ParameterKey": "AvailabilityZone1",
    "ParameterValue": "sa-east-1b"
  },
  {
    "ParameterKey": "AvailabilityZone2",
    "ParameterValue": "sa-east-1c"
  }
]

Update sa-east NodeType to m3
Update sa-east NodeType to m3
