Adding upstream version 2.7.4.

ReleaseNotes-2.7.1

ReleaseNotes-2.7.2

ReleaseNotes-2.7.3

ReleaseNotes-2.7.4

src/api/Gemfile.lock

src/api/app/controllers/attribute_controller.rb

src/api/app/controllers/request_controller.rb

src/api/app/controllers/source_controller.rb

src/api/app/controllers/trigger_controller.rb

src/api/app/controllers/webui/package_controller.rb

src/api/app/controllers/webui/project_controller.rb

src/api/app/controllers/webui/user_controller.rb

src/api/app/controllers/webui/webui_controller.rb

src/api/app/models/bs_request_action_maintenance_incident.rb

src/api/app/models/bs_request_permission_check.rb

src/api/app/models/package.rb

src/api/app/models/project.rb

src/api/app/models/token.rb

src/api/app/models/user_ldap_strategy.rb

src/api/config/options.yml.example