azure-quickstart-templates/hortonworks-on-centos/azuredeploy-parameters.json

{
    "dnsNamePrefix": {
        "value": "defaultDnsNamePrefix"
    },
    "storageAccountPrefix": {
        "value": "defaultStorageAccountPrefix"
    },        
    "region": {
        "value": "East Asia"
    },
    "tshirtSize": {
        "value": "Eval"
    }    
}