Merge branch '4115-enable-scoped-boards-for-early-adopters' into 'master'

Resolve "Configurable issue boards should be part of GitLab.com early adopter plan"

Closes #4115 and gitlab-com/support-forum#2729

See merge request gitlab-org/gitlab-ee!3497

changelogs/unreleased-ee/4115-enable-scoped-boards-for-early-adopters.yml

+---
+title: Enable scoped boards for Early Adopters
+merge_request:
+author:
+type: fixed

ee/app/models/license.rb

@@ -84,6 +84,7 @@ class License < ActiveRecord::Base
     push_rules
     related_issues
     repository_mirrors
+    scoped_issue_board
     service_desk
     variable_environment_scope
   ].freeze