Keycloak seems to have decided today that it will now send headers
that are larger than what the nginx default configuration can handle.
The numbers are a mix of made up and taken from random nginx voodoo
posts on the internet, so they're as good a guess as anyone's.
Change-Id: If037bcba48eee371cc96304b150276c669930c75
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7992
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: tazjin <tazjin@tvl.su>
3caa4c4aa4