RFR: 8304834: Fix wrapper insertion in TestScaffold.parseArgs(String args[]) [v2]

[Leonid Mesnik]

> The TestScaffold incorrectly parse options, it should insert wrapper class between VM options and applications classame.

Leonid Mesnik has updated the pull request incrementally with one additional commit since the last revision:

  added comments and trim arguments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13170/files
  - new: https://git.openjdk.org/jdk/pull/13170/files/e7c5e99a..1b74ae22

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13170&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13170&range=00-01

  Stats: 21 lines in 1 file changed: 8 ins; 1 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/13170.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13170/head:pull/13170

PR: https://git.openjdk.org/jdk/pull/13170