[jdk8u] RFR: 8028265: Add legacy tz tests to OpenJDK

Fri Sep 16 16:02:05 UTC 2022

This is a clean backport of JDK-8028265, other than moving the tests from `test/jdk` to `jdk/test`.

All tests pass with current 8u.  `AssureTzdataVersion` also successfully caught version mismatches between the local tree's 2022a and 2021e in an old build, and 2022c in my system build that already has updated system tzdata

Applying for this as a critical fix as it's a pre-requisite for [JDK-8292579](https://bugs.openjdk.org/browse/JDK-8292579), the update to 2022c

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Commit messages:
 - Backport 92deab546549ca549408a983fe361d9536d2cd37

Changes: https://git.openjdk.org/jdk8u/pull/20/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u&pr=20&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8028265
  Stats: 1221 lines in 9 files changed: 1221 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk8u/pull/20.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u pull/20/head:pull/20

PR: https://git.openjdk.org/jdk8u/pull/20