[Integrated] RFR: Add support for Issue links with Jira implementation

[Robin Westberg]

Changeset: 4b6d324f
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2019-12-10 14:19:45 +0000
URL:       https://git.openjdk.java.net/skara/commit/4b6d324f

Add support for Issue links with Jira implementation

Reviewed-by: ehelin

! bots/tester/src/test/java/org/openjdk/skara/bots/tester/InMemoryPullRequest.java
! forge/src/main/java/org/openjdk/skara/forge/github/GitHubPullRequest.java
! forge/src/main/java/org/openjdk/skara/forge/gitlab/GitLabMergeRequest.java
! issuetracker/src/main/java/org/openjdk/skara/issuetracker/Issue.java
+ issuetracker/src/main/java/org/openjdk/skara/issuetracker/Link.java
+ issuetracker/src/main/java/org/openjdk/skara/issuetracker/LinkBuilder.java
! issuetracker/src/main/java/org/openjdk/skara/issuetracker/jira/JiraIssue.java
! issuetracker/src/test/java/org/openjdk/skara/issuetracker/IssueTrackerTests.java
! test/src/main/java/org/openjdk/skara/test/IssueData.java
! test/src/main/java/org/openjdk/skara/test/TestIssue.java