RFR: Give up waiting for the auth lock after a while

[Robin Westberg]

If a RestRequest never completes (this has happened a few times) we give up after a while to allow the process to be restarted.

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Commit messages:
 - Give up waiting for the auth lock after a while

Changes: https://git.openjdk.java.net/skara/pull/895/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=895&range=00
  Stats: 44 lines in 1 file changed: 24 ins; 13 del; 7 mod
  Patch: https://git.openjdk.java.net/skara/pull/895.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/895/head:pull/895

PR: https://git.openjdk.java.net/skara/pull/895