chore(tests/lean): reactivate config.lean
chore(tests/lean): reactivate config.lean

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

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