[FIX] l10n_br_sale: fix ipi tax for taxes simples
[FIX] l10n_br_sale: fix ipi tax for taxes simples

OCA/l10n-brazil,akretion/l10n-brazil,akretion/l10n-brazil,OCA/l10n-brazil,akretion/l10n-brazil,OCA/l10n-brazil