Auto Retry mechanism on 503?

[martinlevesque]

Don't know if this could be included as an option feature, I added the following function (query) to add a retry mechanism:

async function wait(seconds) {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve()
    }, seconds * 1000);
  });
}

vultrInstance.query = async function(category, func, ...params) {
  for (let retry = 0; retry <= 7; ++retry) { // max trials
    try {
      return await vultrInstance[category][func](...params);
    } catch(err) {
      if (err.statusCode !== 503) {
        throw err;
      } else {
        await wait(2);
      }
    }
  }
}

but perhaps could be interesting to have it as an option instead of the default 1 second timeout before the request.