RFR: 1467: Update JBS URL in Skara src

[Erik Joelsson]

This patch changes all bugs and github.openjdk.java.net references to openjdk.org.

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Commit messages:
 - SKARA-1467

Changes: https://git.openjdk.java.net/skara/pull/1332/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=1332&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-1467
  Stats: 19 lines in 13 files changed: 0 ins; 0 del; 19 mod
  Patch: https://git.openjdk.java.net/skara/pull/1332.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1332/head:pull/1332

PR: https://git.openjdk.java.net/skara/pull/1332