<i18n dev> RFR: 8303039: Utilize `coverageLevels.txt` [v2]

[Joe Wang]

On Thu, 2 Mar 2023 01:03:20 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> This is a pre-requisite for supporting CLDR v43, where they combine `seeds` locales with `common` locales (https://cldr.unicode.org/index/downloads/cldr-43#h.7s25aqdv767e). In order to have the same coverage level of locales, CLDRConverter tool needs to comb through the locale files based on the `coverageLevels.txt` file, (and the ones we already included as of v42). Confirmed the same set of locales is generated before and after this modification.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Explicitly filter coverage levels

Marked as reviewed by joehw (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/12812