AzureRM deployment template using listKeys on a storageAccount

azuredeploy.json

{
  "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": { },
  "variables": {
    "storeName": "[concat('store', uniqueString(resourceGroup().id))]"
  },
  "resources": [
    {
      "name": "[variables('storeName')]",
      "type": "Microsoft.Storage/storageAccounts",
      "location": "[resourceGroup().location]",
      "apiVersion": "2017-06-01",
      "sku": {
        "name": "Standard_LRS"
      },
      "dependsOn": [],
      "kind": "Storage"
    }
  ],
  "outputs": {
    "keys": {
      "type": "string",
      "value": "[listKeys(variables('storeName'), '2017-06-01').keys[0].value]"
    }
  }
}