Rule blocked: CORERULES-9376 - need ISO 3166 validation for "COUNTRY"

Rule FB1703: "Value for the Country (COUNTRY) variable must be populated using terms found in ISO 3166." (alpha-3 = 3-character code). 
This probably requires the ISO 3166 3-character codes to be available in the CDISC Library, and then a function to retrieve them.
