GitLab

Chromium is failing to compile reporting:

obj/components/feedback/libfeedback.a: error adding symbols: malformed archive

which https://github.com/OSSystems/meta-browser/issues/194 has led me to
believe is actually due to the max open file limit.  Checked
`/proc/<buildah-chroot-pid>/limits` inside the build container and, sure
enough, "1024."

See also: stage0@9f790786

Parameterize the GitLab CI script and add the profile change to the
Containerfile.

Puppet does weird calculations with distcc that don't work when the CI
host is also a distcc server.

There is no need to pass build options from the CI host because the
algorithm Puppet uses to make /etc/portage/make.conf works just as well
inside the container.