Restore FACTER_makeopts

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

.gitlab-ci.yml

@@ -12,6 +12,7 @@ default:
     - 'buildah bud --pull
                    --security-opt seccomp=unconfined
                    --build-arg STAGE0_TAG=haswell
+                   --build-arg FACTER_makeopts="$CI_HOST_MAKEOPTS"
                    -v "${PUPPET_CERTIFICATE}:/etc/puppetlabs/puppet/ssl/certs/ci.pem"
                    -v "${PUPPET_PRIVATE_KEY}:/etc/puppetlabs/puppet/ssl/private_keys/ci.pem"
                    -v "${PWD}/debug:/usr/lib/debug"

Containerfile

 ARG STAGE0_TAG
 FROM nest/stage0:${STAGE0_TAG}
 
+ARG FACTER_makeopts
+
 RUN eix-sync -q
 RUN FACTER_build=stage1 puppet agent --test --certname ci --logdir /var/log/puppet --rundir /var/run/puppet --vardir /var/lib/puppet --runtimeout 0; [ $? -eq 2 ]
 RUN rm -rf /var/db/repos