[jdk11u-dev] RFR: 8240235: jdk.test.lib.util.JarUtils updates jar files incorrectly

[Kangcheng Xu]

a clean backport of [JDK-8240235](https://bugs.openjdk.org/browse/JDK-8240235).

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Commit messages:
 - Merge branch 'openjdk:master' into backport-8240235
 - 8240235: jdk.test.lib.util.JarUtils updates jar files incorrectly

Changes: https://git.openjdk.org/jdk11u-dev/pull/2215/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2215&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8240235
  Stats: 16 lines in 1 file changed: 13 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2215.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2215/head:pull/2215

PR: https://git.openjdk.org/jdk11u-dev/pull/2215