Merge branch 'pipeline-hooks' into 'master'

Implement Slack integration for pipeline hooks

## What does this MR do?

Add pipeline events to Slack integration

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] Added for this feature/bug

See merge request !5525

1 files changed, 2 insertions, 2 deletions

diff --git a/app/models/project_services/slack_service/build_message.rb b/app/models/project_services/slack_service/build_message.rb
index 69c21b3fc38..0fca4267bad 100644
--- a/app/models/project_services/slack_service/build_message.rb
+++ b/app/models/project_services/slack_service/build_message.rb
@@ -9,7 +9,7 @@ class SlackService
     attr_reader :user_name
     attr_reader :duration
 
-    def initialize(params, commit = true)
+    def initialize(params)
       @sha = params[:sha]
       @ref_type = params[:tag] ? 'tag' : 'branch'
       @ref = params[:ref]
@@ -36,7 +36,7 @@ class SlackService
 
     def message
       "#{project_link}: Commit #{commit_link} of #{branch_link} #{ref_type} by #{user_name} #{humanized_status} in #{duration} #{'second'.pluralize(duration)}"
-    end   
+    end
 
     def format(string)
       Slack::Notifier::LinkFormatter.format(string)