RFR: 8313613: Use JUnit in langtools/lib tests [v6]

[Qing Xiao]

> Use JUnit Jupiter API in langtools/lib tests instead of TestNG. They are under test/langtools/lib/combo/tools/javac/combo/.
> Modified tests that extend tools in CompilationTestCase and JavacTemplateTestBase to implement TestWatcher.

Qing Xiao has updated the pull request incrementally with one additional commit since the last revision:

  Update test/langtools/tools/javac/records/RecordCompilationTests.java
  
  Co-authored-by: Christian Stein <sormuras at gmail.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15281/files
  - new: https://git.openjdk.org/jdk/pull/15281/files/500a8a4c..e13576bc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15281&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15281&range=04-05

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/15281.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15281/head:pull/15281

PR: https://git.openjdk.org/jdk/pull/15281