message: Temp: use https on gitlab + fix case were directory already exist (out of CI)
diff: set -o errexit
  set -o nounset
  -uberenv_url="ssh://git@czgitlab.llnl.gov:7999/mfem/mfem-uberenv.git"
  +uberenv_url="https://lc.llnl.gov/gitlab/mfem/mfem-uberenv.git"
  uberenv_ref="c2f3497e9a392885058dd2ba93e2f8c071655726"
  -git clone ${uberenv_url} scripts/uberenv
  +[[ ! -d scripts/uberenv ]] && git clone ${uberenv_url} scripts/uberenv
  cd scripts/uberenv
  git fetch origin ${uberenv_ref}
  git checkout ${uberenv_ref}
  