chore(tests/lua): use default environment instead of creating a new one
chore(tests/lua): use default environment instead of creating a new one

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

htzh/lean,digama0/lean,johoelzl/lean,javra/lean,leanprover-community/lean,UlrikBuchholtz/lean,avigad/lean,Kha/lean,javra/lean,fpvandoorn/lean,codyroux/lean0.1,UlrikBuchholtz/lean,leanprover-community/lean,eigengrau/lean,UlrikBuchholtz/lean,soonhokong/lean-osx,fgdorais/lean,eigengrau/lean,johoelzl/lean,UlrikBuchholtz/lean,fpvandoorn/lean,leanprover-community/lean,johoelzl/lean,digama0/lean,rlewis1988/lean,codyroux/lean0.1,htzh/lean,leodemoura/lean,avigad/lean,Kha/lean,fpvandoorn/lean,soonhokong/lean-windows,fpvandoorn/lean,soonhokong/travis_test,c-cube/lean,soonhokong/travis_test,leanprover-community/lean,dselsam/lean,levnach/lean,digama0/lean,johoelzl/lean,c-cube/lean,digama0/lean,rlewis1988/lean,soonhokong/lean-windows,dselsam/lean,fpvandoorn/lean2,leanprover/lean,soonhokong/lean-osx,soonhokong/lean,Kha/lean,levnach/lean,htzh/lean,soonhokong/lean-osx,rlewis1988/lean,c-cube/lean,avigad/lean,fpvandoorn/lean2,fpvandoorn/lean2,leanprover-community/lean,UlrikBuchholtz/lean,levnach/lean,avigad/lean,fgdorais/lean,soonhokong/lean-windows,htzh/lean,rlewis1988/lean,sp3ctum/lean,soonhokong/lean-windows,soonhokong/lean,leodemoura/lean,soonhokong/lean,soonhokong/travis_test,soonhokong/lean-windows,eigengrau/lean,javra/lean,levnach/lean,avigad/lean,eigengrau/lean,dselsam/lean,dselsam/lean,levnach/lean,javra/lean,Kha/lean,soonhokong/lean-osx,dselsam/lean,leanprover/lean,avigad/lean,fpvandoorn/lean2,javra/lean,codyroux/lean0.1,leanprover/lean,johoelzl/lean,digama0/lean,leanprover/lean,fpvandoorn/lean2,johoelzl/lean,leodemoura/lean,sp3ctum/lean,fgdorais/lean,soonhokong/travis_test,fpvandoorn/lean,htzh/lean,sp3ctum/lean,codyroux/lean0.1,sp3ctum/lean,soonhokong/lean,leanprover-community/lean,leanprover/lean,leodemoura/lean,rlewis1988/lean,leodemoura/lean,c-cube/lean,leodemoura/lean,rlewis1988/lean,dselsam/lean,Kha/lean,fgdorais/lean,fpvandoorn/lean,leanprover/lean,soonhokong/lean,fgdorais/lean,eigengrau/lean,Kha/lean,soonhokong/lean-osx,fgdorais/lean,sp3ctum/lean,digama0/lean,c-cube/lean