add initializer requiring to load active_merchant/billing/integrations/sermepa
add initializer requiring to load active_merchant/billing/integrations/sermepa

2beDigital/spree_redsys,picazoH/spree_sermepa,taniarv/spree_redsys,taniarv/spree_redsys,taniarv/spree_redsys,2beDigital/spree_redsys,2beDigital/spree-redsys,2beDigital/spree_redsys,2beDigital/spree-redsys,2beDigital/spree-redsys,picazoH/spree_sermepa,picazoH/spree_sermepa