[Integrated] RFR: Allow setting a fixversion per branch

[Robin Westberg]

Changeset: 207532cc
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2020-01-16 07:09:54 +0000
URL:       https://git.openjdk.java.net/skara/commit/207532cc

Allow setting a fixversion per branch

Reviewed-by: ehelin

! bots/notify/src/main/java/org/openjdk/skara/bots/notify/IssueUpdater.java
! bots/notify/src/main/java/org/openjdk/skara/bots/notify/NotifyBotFactory.java
! bots/notify/src/test/java/org/openjdk/skara/bots/notify/UpdaterTests.java