RFR: 8310923: Refactor Currency tests to use JUnit [v6]

[Lance Andersen]

On Fri, 30 Jun 2023 16:49:22 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> Please review this PR which refactors Currency tests to use JUnit.
>> 
>> The most significant change occurs in `ValidateISO4217.java`. Other changes to this file excluding the JUnit refactoring include
>> 
>> - Tests are no longer dependent on each other (order of execution does not matter)
>> - Testing does not occur at the same time as data generation (The data is fully generated before any tests are executed)
>> - Various cleanup (dead-code, clarifying comments, more descriptive method and var names)
>> 
>> `Bug4512215.java` now renamed to `MinorUndefinedCodes` was updated to remove redundant testing, and the file changed to focus on testing minor undefined currency codes instead.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review: Adjust data provider regarding Turkish Lira

Marked as reviewed by lancea (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/14682#pullrequestreview-1507578660