HTTP Code 403 on activation

[craig]

Berghain / haproxy in the default config sends a 403 when it gets activated. It should probably be a 429 or something 3xx, so it does not get cached.

[fionera]

I took inspiration for this from Cloudflare since they are also doing this. You can change this behaviour by editing the HAProxy config here https://github.com/DropMorePackets/berghain/blob/master/examples/haproxy/haproxy.cfg#L38