RFR: 2557: Set resolution to Fixed when resolving Jira issues

[Zhao Song]

This patch is trying to let Skara  bot  explicitly set resolution to "Fixed" when resolving Jira issues.

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Commit messages:
 - SKARA-2557

Changes: https://git.openjdk.org/skara/pull/1730/files
  Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1730&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-2557
  Stats: 18 lines in 1 file changed: 7 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/skara/pull/1730.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1730/head:pull/1730

PR: https://git.openjdk.org/skara/pull/1730