FCP 20190401-ci_policy: CI policy

[Li-Wen Hsu]

It seems I was doing wrong that just changed the content of this FCP
to "feedback", but did not send to the right mailing lists.

So I would like to make an announcement that the FCP
20190401-ci_policy "CI policy":

https://github.com/freebsd/fcp/blob/master/fcp-20190401-ci_policy.md

is officially in "feedback" state to hopefully receive more comments
and suggestions, then we can move on for the next FCP state.

Thanks,
Li-Wen