Make delta in past timestamp check configurable

[nitely]

Summary

The current delta is 30 days. Reports older than 30 days will show a Discarded invalid value for parameter 'timestamp' Collapse error and the timestamp get set to the current time. I need reports older than 30 days (but not much older) to keep the original datetime.

Motivation

The project I'm working on sometimes receives old logs, older than 30 days (usually 45 days or so). I want them to keep the original timestamp. I'm aware the original timestamp can be found at asctime field. But I don't want old reports to show as they were generated today. The checking is still useful in cases were the clock is way off, I just want to increase the delta.

Additional Context

If I'm not mistaken, the check can be found here, the current value is hard coded to 30 days.

[BYK]

Closing this issue due to staleness. Feel free to comment here if you think we should still work on this.

[astrojuanlu]

It would be a nice addition, yes. I looked at this issue a few hours ago to see if there was progress (or more upvotes)

[iliya-timofeev]

I also would like to vote for this issue.

[BYK]

@astrojuanlu @iliya-timofeev - I think this wouldn't be too complex to implement through our configuration system. Would you be willing to submit a PR?

PR: I don't think we can change this for sentry.io though, so the configuration would only make sense for self-hosted Sentry. /cc @mattrobenolt @JTCunning to verify.

[mattrobenolt]

There's no technical reason we can't do this in SaaS, but frankly the UX for this is way too confusing. It's already confusing enough allowing anything in the past.