models: country: add iso
models: country: add iso

apercas/gfw,KarlaRenschler/gfw,cciciarelli8/gfw,codeminery/gfw,codeminery/gfw,codeminery/gfw,Vizzuality/gfw,cciciarelli8/gfw,KarlaRenschler/gfw,codeminery/gfw,apercas/gfw,apercas/gfw,KarlaRenschler/gfw,KarlaRenschler/gfw,apercas/gfw,Vizzuality/gfw