RFR: 8292182: [TESTLIB] Enhance JAXPPolicyManager to setup required permissions for jtreg version 7 jar [v2]

[Christian Stein]

> Enhance `JAXPPolicyManager` to setup required permissions for `jtreg` 7 by accept version information in JAR file names.
> 
> Find details in https://bugs.openjdk.org/browse/JDK-8292182

Christian Stein has updated the pull request incrementally with one additional commit since the last revision:

  Remove unused import statement

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9857/files
  - new: https://git.openjdk.org/jdk/pull/9857/files/f2046e67..0ca1a25c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9857&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9857&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9857.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9857/head:pull/9857

PR: https://git.openjdk.org/jdk/pull/9857