This variable was not required when running from the user-space, but
after migrating to quadlets, I had to define it.
Just to satisfy the requirements, I set it to 1. Based on some docs I
have managed to find, it appears that the default is 10. Given the
amount of users of my deployment and the fact it's running on the VPS,
setting it to 8.
Signed-off-by: Matej Focko <me@mfocko.xyz>