Return a little more information in Issue webhook

When a webhook for issues is triggered, it should also return the
resource URL, and the action that was performed (ie: Was it reopened,
updated, opened or closed)

app/services/issues/base_service.rb

 module Issues
   class BaseService < ::BaseService
+    include Rails.application.routes.url_helpers
     private
@@ -7,8 +8,13 @@ module Issues
       Note.create_assignee_change_note(issue, issue.project, current_user, issue.assignee)
     end
-    def execute_hooks(issue)
-      issue.project.execute_hooks(issue.to_hook_data, :issue_hooks)
+    def execute_hooks(issue, action = 'open')
+      issue_data = issue.to_hook_data
+      issue_url = project_issue_url(id: issue.iid,
+                                    project_id: issue.project,
+                                    host: Settings.gitlab['url'])
+      issue_data[:object_attributes].merge!(url: issue_url, action: action)
+      issue.project.execute_hooks(issue_data, :issue_hooks)
     end
     def create_milestone_note(issue)

app/services/issues/close_service.rb

@@ -5,7 +5,7 @@ module Issues
         notification_service.close_issue(issue, current_user)
         event_service.close_issue(issue, current_user)
         create_note(issue, commit)
-        execute_hooks(issue)
+        execute_hooks(issue, 'close')
       end
       issue

app/services/issues/create_service.rb

@@ -8,7 +8,7 @@ module Issues
         notification_service.new_issue(issue, current_user)
         event_service.open_issue(issue, current_user)
         issue.create_cross_references!(issue.project, current_user)
-        execute_hooks(issue)
+        execute_hooks(issue, 'open')
       end
       issue

app/services/issues/reopen_service.rb

@@ -4,7 +4,7 @@ module Issues
       if issue.reopen
         event_service.reopen_issue(issue, current_user)
         create_note(issue)
-        execute_hooks(issue)
+        execute_hooks(issue, 'reopen')
       end
       issue

app/services/issues/update_service.rb

@@ -23,7 +23,7 @@ module Issues
         end
         issue.notice_added_references(issue.project, current_user)
-        execute_hooks(issue)
+        execute_hooks(issue, 'update')
       end
       issue