RFR: 8287187: Utilize HashMap.newHashMap() in CLDRConverter [v2]

[Joe Wang]

On Wed, 25 May 2022 17:15:18 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> Refactoring the leftover self-calculations of the optimized `HashMap` initial value with `newHashMap()` method. Also replaced some string literals using text blocks for better readability. Confirmed that the output resource bundle sources are effectively (sans indentation) the same as the original ones.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   minor fixup

Marked as reviewed by joehw (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8887