[Rev 01] RFR: 212: Retry notifications for updaters that can check current state

[Robin Westberg]

> Hi all,
> 
> Please review this change that enables issue notifications to be retried in case transient server errors occur, but will not send out duplicate email notifications.
> 
> Best regards,
> Robin

The pull request has been updated with 1 additional commit.

-------------

Added commits:
 - 7aa81917: Improve naming and detection of previous issue comments

Changes:
  - all: https://git.openjdk.java.net/skara/pull/339/files
  - new: https://git.openjdk.java.net/skara/pull/339/files/b78f2a14..7aa81917

Webrevs:
 - full: https://webrevs.openjdk.java.net/skara/339/webrev.01
 - incr: https://webrevs.openjdk.java.net/skara/339/webrev.00-01

  Stats: 6 lines in 2 files changed: 1 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/skara/pull/339.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/339/head:pull/339

PR: https://git.openjdk.java.net/skara/pull/339