<Swing Dev> RFR: 8254976: Re-enable swing jtreg tests which were broken due to samevm mode [v3]

[Prasanta Sadhukhan]

> Few tests were problemlisted in an earlier test sprint due to those failing in mach5 testing.
> It was found out that these test were failing due to those jtreg tests being run in same vm mode.
> The bug was fixed by the adding client tests to the "othervm.dirs" in the TEST.ROOT so there is no need to keep those
> tests problem listed. mach5 job running these tests was ok. Link in JBS.

Prasanta Sadhukhan has updated the pull request incrementally with one additional commit since the last revision:

  Add JComboBox test to PL which was mistakenly removed

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/733/files
  - new: https://git.openjdk.java.net/jdk/pull/733/files/2354ad1c..868cea76

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=733&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=733&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/733.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/733/head:pull/733

PR: https://git.openjdk.java.net/jdk/pull/733