Adds requestedTokens configuration option. Previously, this was
hardcoded to 1.
Make the 'requested tokens' redis template argument configurable in
order to allow defining rate limits lower than 1 req/s, e.g. 1 req/m.
This is accomplished by setting:
- replenishRate = requestRate
- burstRate = requestRate * timeSpanInSeconds
- requestedTokens = timeSpanInSeconds
For 1 req/m this would be accomplished by:
- replenishRate = 1
- burstRate = 60
- requestedTokens = 60
fixes gh-1327
8ba1c06183