[code-reflection] RFR: Transform runtime test to JUnit [v8]

[Mourad Abbay]

> Transform runtime test to JUnit.

Mourad Abbay has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains eight additional commits since the last revision:

 - Merge branch 'code-reflection' into rtests-to-junit
 - Optimize imports in runtime tests (using IntelliJ)
 - Apply suggestion
   
   Co-authored-by: Paul Sandoz <paul.d.sandoz at googlemail.com>
 - Move test that requires non-static method source, from TestLambdaOps to a new test class
 - Fix TestReferences
 - Fix TestJavaTypes
 - Fix TestBytecode
 - Transform runtime test to JUnit

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Changes:
  - all: https://git.openjdk.org/babylon/pull/578/files
  - new: https://git.openjdk.org/babylon/pull/578/files/4702d391..c450fd5c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=578&range=07
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=578&range=06-07

  Stats: 896 lines in 36 files changed: 671 ins; 41 del; 184 mod
  Patch: https://git.openjdk.org/babylon/pull/578.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/578/head:pull/578

PR: https://git.openjdk.org/babylon/pull/578