RFR: 8375221: Update code to get PrinterResolution from CUPS/IPP print service

[Phil Race]

Previous to this fix, no resolution was being found via CUPS/IPP and when the test case for printer resolution was falling back to the made up 300dpi setting. With this fix it finds the 600dpi from CUPS/IPP.

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Commit messages:
 - 8375221

Changes: https://git.openjdk.org/jdk/pull/29208/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29208&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375221
  Stats: 112 lines in 3 files changed: 77 ins; 22 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/29208.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29208/head:pull/29208

PR: https://git.openjdk.org/jdk/pull/29208