[jdk11u-dev] RFR: 8255969: Improve java/io/BufferedInputStream/LargeCopyWithMark.java using jtreg tags

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport 727a69f537d6e6a8f3bd14b7004159242aef8f76

Changes: https://git.openjdk.org/jdk11u-dev/pull/2873/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2873&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8255969
  Stats: 45 lines in 1 file changed: 1 ins; 24 del; 20 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2873.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2873/head:pull/2873

PR: https://git.openjdk.org/jdk11u-dev/pull/2873