RFR: Implement Jira authentication

[Robin Westberg]

Hi all,

Please review this change that implements Jira authentication using vault, as well as the remaining unimplemented methods that required authentication.

Best regards,
Robin

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Commits:
 - 3411d75b: Implement Jira authentication using vault and remaining unimplemented methods

Changes: https://git.openjdk.java.net/skara/pull/232/files
 Webrev: https://webrevs.openjdk.java.net/skara/232/webrev.00
  Stats: 326 lines in 9 files changed: 299 ins; 3 del; 24 mod
  Patch: https://git.openjdk.java.net/skara/pull/232.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/232/head:pull/232

PR: https://git.openjdk.java.net/skara/pull/232