[Integrated] RFR: Add support for Resolved issue state

[Robin Westberg]

Changeset: c18c7d3d
Author:    Robin Westberg <rwestberg at openjdk.org>
Date:      2019-12-03 14:51:49 +0000
URL:       https://git.openjdk.java.net/skara/commit/c18c7d3d

Add support for Resolved issue state

Reviewed-by: ehelin

! 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/jira/JiraIssue.java