[jdk11u-dev] RFR: 8273961: jdk/nio/zipfs/ZipFSTester.java fails if file path contains '+' character

[Goetz Lindenmaier]

I backport this for parity with 11.0.14-oracle.

Only copyright resolve.

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Commit messages:
 - Backport 7f78803b0926ea194334ad9b3c9f06cbe17a83dd

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/501/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=501&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273961
  Stats: 14 lines in 1 file changed: 9 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/501.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/501/head:pull/501

PR: https://git.openjdk.java.net/jdk11u-dev/pull/501