Support ISO 3166 alpha-3 codes on world map visualization

[wjt]

I found a previous thread where someone was surprised that three-letter ISO country codes aren't supported:

Building map visualization from Druid datastore

Hi Sameer, I did map the value to country ISO Code but it still doesn't show it in map. Below is the table view: [image] and here is how Map looks like [image] If you can refer me to the code, that would be useful as well.