Investigate windows failure in rpc_conflict test

[oxarbitrage]

Motivation

In #3641 we added an rpc_conflict test to check an already in use port for the rpc server.

This test is failing on windows: #3641 (comment)

Scheduling

We are disabling the test for windows family but we will want to know what is going on exactly with it and potentially fix and enable the test for this platform.

We only need to schedule this ticket if we decide to support Windows as a primary platform.

[ftm1000]

Hey team! Please add your planning poker estimate with ZenHub @conradoplg @dconnolly @gustavovalverde @jvff @oxarbitrage @teor2345 @upbqdn

[teor2345]

We only need to schedule this ticket if we decide to support Windows as a primary platform.

(We seemed to only want to promise primary support for Linux last time we talked.)

[gustavovalverde]

That's correct. And we even have to workaround some issues with Docker and Rust while using Windows rust-lang/docker-rust#30

[oxarbitrage]

We are not supporting windows anymore by now, we can reopen if we decide to do so.