[Integrated] RFR: Improve Jira state transition handling

[Robin Westberg]

Changeset: 7bcc027f
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2019-12-04 12:38:38 +0000
URL:       https://git.openjdk.java.net/skara/commit/7bcc027f

Improve Jira state transition handling

Reviewed-by: ehelin

! issuetracker/src/main/java/org/openjdk/skara/issuetracker/jira/JiraIssue.java
! issuetracker/src/test/java/org/openjdk/skara/issuetracker/IssueTrackerTests.java