2.2 release

[samrocketman]

This issue is to track Slack plugin 2.2 release.

[samrocketman]

#295 - update CHANGELOG

[samrocketman]

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5:prepare (default-cli) on project slack: Unable to commit files
[ERROR] Provider message:
[ERROR] The git-push command failed.
[ERROR] Command output:
[ERROR] remote: error: GH006: Protected branch update failed for refs/heads/master.
[ERROR] remote: error: Required status check "Jenkins" is expected.
[ERROR] To ssh://git@github.com/jenkinsci/slack-plugin.git
[ERROR] ! [remote rejected] master -> master (protected branch hook declined)
[ERROR] error: failed to push some refs to 'ssh://git@github.com/jenkinsci/slack-plugin.git'
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

@kmadel the settings you enabled on this repository requiring PR status checks breaks the ability to release.

Note:

[ERROR] remote: error: GH006: Protected branch update failed for refs/heads/master.
[ERROR] remote: error: Required status check "Jenkins" is expected.

[samrocketman]

Release is blocked by repository settings.

[kmadel]

Repository settings have been updated. Although this never blocked me when doing a release following your list of steps.

[jiamengyu]

Can you please include PR #299 into release 2.2? I just complete the test locally. I really want proxy issue resolved so we can use Slack notification in enterprise environment.

[samrocketman]

@jiamengyu sure, I haven't released yet. Can you squash your commits into a single commit?

[jiamengyu]

@samrocketman I have squashed all comments into one as Proxy fix #102. Please let me know if anything else I need to do.

[samrocketman]

2.2 released. It can be downloaded from https://repo.jenkins-ci.org/releases/org/jenkins-ci/plugins/slack/2.2/. It typically takes roughly 4-8 hours to show up in the update center.

Changes in this released can be viewed in the CHANGELOG.