Standardise countries ISO_3166-1_alpha-3

[peterdudfield]

Detailed Description

I think it would be good if we start to standardise the countries using their 3 letter code

Context

• https://en.wikipedia.org/wiki/ISO_3166-1_alpha-3
• we should also update airflow and

Possible Implementation

Update,

• uk to gbr_gb, (to show its just great Britain (not northern Ireland)
• nl to nld
• be to bel

[ram-from-tvl]

Hi @peterdudfield
I would like to work on this.
Could you please assign this to me.
Thank you!

[Koolvansh07]

Saw this issue was open and had some time, so figured I'd tackle it. Changed the country codes to the ISO standard as requested. Let me know if I missed anything!

[ArkVex]

Sorry to interfere @Koolvansh07 but i think this issue is already assigned to @ram-from-tvl .
Did you consult him before raising a PR?

[Koolvansh07]

@ArkVex I did not Im sorry about that

[ArkVex]

No worries @Koolvansh07 just make sure @ram-from-tvl knows about your approach