RFR: JDK-8344368 : IndependenceSwingTest.java and IndependenceAWTTest.java failed: Selected text & clipboard contents differs [v3]

[Harshitha Onkar]

> The following two tests failed intermittently due to stability issues after JEP486 (Removal of Security Manager). Tests have been updated for stability. 
> This test is applicable for linux platform only, hence `@requires (os.family == "linux")`  jtreg tag is added and the redundant OS check within the test is removed.
> 
> - java/awt/datatransfer/Independence/IndependenceAWTTest.java
> - java/awt/datatransfer/Independence/IndependenceSwingTest.java
> 
> Multiple runs of the test on CI looks good and the tests pass.

Harshitha Onkar has updated the pull request incrementally with one additional commit since the last revision:

  frame title

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22490/files
  - new: https://git.openjdk.org/jdk/pull/22490/files/86de95ff..795f8bd1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22490&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22490&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/22490.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22490/head:pull/22490

PR: https://git.openjdk.org/jdk/pull/22490