[389-devel] Please review: !389-ds-base-1.4.3 - mandatory Rust! - Backport missing Rust commits

[Simon Pichugin]

Hi folks,
please check the PR which brings a bunch of Rust commits to 1.4.3 which
makes it Rust mandatory branch (because PBKDF2-SHA512 is a default pw
scheme now. And it's implemented in Rust)

https://github.com/389ds/389-ds-base/pull/5520

Thanks!
Simon