Add godo's rate limiter configuration & retryable http client #546

docs/index.md

@@ -62,8 +62,8 @@ The following arguments are supported:
  `SPACES_ENDPOINT_URL` environment variable or `https://{{.Region}}.digitaloceanspaces.com`
  if unset.) The provider will replace `{{.Region}}` (via Go's templating engine) with the slug
  of the applicable Spaces region.
-* `requests_per_second` - (Optional) This can be used to override the limit of
- API calls per second and avoid rate limit errors, can be disabled by setting the value
+* `requests_per_second` - (Optional) This can be used to enable throttling, overriding the limit
+ of API calls per second to avoid rate limit errors, can be disabled by setting the value
  to `0.0` (Defaults to the value of the `DIGITALOCEAN_REQUESTS_PER_SECOND` environment
  variable or `0.0` if unset).
 * `http_retry_max` - (Optional) This can be used to override the maximum number