refer to mirage module types modules by new name

[yomimono]

V1 is now Mirage_types, and V1_LWT is now Mirage_types_lwt, as of MirageOS version 3.0.0.

[talex5]

CI failed with:

[WARNING] External solver failed with inconsistent return value. Request saved
          to "/home/opam/.opam/log/solver-error-19-1.cudf"
[ERROR] External solver failure, please fix your installation and check
        /home/opam/.opam/config and variable $OPAMEXTERNALSOLVER.
        You may also retry with option --use-internal-solver

moby/datakit.logs@46c2ea4#diff-dc1d71bbb5c4d2a5e936db79ef10c19fR121

[djs55]

FWIW I think I saw the same error earlier today when building an ocaml package locally in an alpine container.

[talex5]

I guess this needs to wait for Mirage 3 to be released.

[avsm]

CentOS and Fedora are the only containers that use the Docker Cloud-hosted solver.ocaml.io, so you will see that error if the infra is down. The builds can be restarted.

[yomimono]

@talex5 if it bugs you to leave this PR open, I'm happy to resubmit it later or point it at a mirage-dev branch.

[talex5]

I think it's fine to keep it open. I've tagged it as tracking.

[samoht]

Superseded by #529 and #531 which have been merged.