cli and provide tests are largely flaky

[flub]

There are a whole bunch of flaky integration tests in the following files:

• iroh/tests/cli.rs
• iroh/tests/provide.rs

I suspect all of these are related to filesystem latencies. We probably need a reliable way to run sync(1)/fsync(2) on the filesystem to fix all of these.

[flub]

https://github.com/n0-computer/iroh/actions/runs/7829002247/job/21360042881?pr=2009

[flub]

Maybe we should just sprinkle shelling out to the sync(1) command around to see if this helps quickly. As ugly as it may be, we'd get these tests back. If there's an equivalent for this on Windows.

[matheus23]

https://github.com/n0-computer/iroh/actions/runs/7829002247/job/21360042881?pr=2009

The next time we should download the logs & upload them here. They've expired since, and they'd be really valuable actually.

[divagant-martian]

most of these tests are no longer flaky, and grouping them all together gives us a poor view of our understanding of what's wrong with each. That being said, I'll close this and open new issue for the two remaining cli flaky tests