Make faucet delay configurable

[jbowen93]

The per rollup faucet is by default configured to have a 24h delay on token requests. I believe this is rate limited on a per IP address basis.

We should make this configurable and document how to change it.

[steezeburger]

I think there may be a bug in the limiter as well. It would not let me get a token at a 2nd address. The limiter does have an ip level block, but I tried with a VPN as well. I need to look into the Kubernetes networking to see if the ingress is passing the headers from the request correctly though, the faucet might be seeing the same ip every time.