RFR: 1146: IssueNotifier updates wrong backport records on new build tags

[Erik Joelsson]

The IssueNotifier currently updates the Resolved in Build field for any and all backports regardless of if the fixVersion of the backport matches the tag or not. This patch fixes that. I didn't need to implement new tests, just adjusting the existing ones seems to be enough to verify the functionality, as one of the existing ones actually was verifying the faulty behavior already.

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

Depends on: https://git.openjdk.java.net/skara/pull/1270

Commit messages:
 - Require branch fixVersion and backport fixVersion to match to update resolved in build

Changes: https://git.openjdk.java.net/skara/pull/1271/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=1271&range=00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-1146
  Stats: 28 lines in 3 files changed: 15 ins; 3 del; 10 mod
  Patch: https://git.openjdk.java.net/skara/pull/1271.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/1271/head:pull/1271

PR: https://git.openjdk.java.net/skara/pull/1271