Re: Injection points: some tools to wait and wake

[Jelte Fennema-Nio]

I noticed this was committed, and took a quick look. It sounds very
useful for testing Citus to be able to use injection points too, but I
noticed this code is included in src/test/modules. It sounds like that
location will make it somewhat hard to install. If that's indeed the
case, would it be possible to move it to contrib instead?