feat: make new bench creation script check for free space on build server and report if under 5GB or x%

[0spinboson]

ran into the issue of a build server being out of space today, wasn't warned anywhere that this was an issue.

Alternatively/additionally you might consider invoking a script that cleans up (docker) build cache files etc., or add other routines to tell you how much space is currently consumed by same, as that's difficult information to ferret out given how docker works.

[tanmoysrt]

There are already cleanup scripts which get triggerred once your build server's disk become 90% full.

For this you need to configure your prometheus and grafana instance. Because the disk full events get trigerred via the prometheus alert webhooks.

[0spinboson]

okay, good to know, thanks. But right now when you don't have those set up you get no warning from the bench build scripts when they fail that it's related to lack of space, and that to me seems kind of unnecessary.