Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to bf240f4fad6e8bf032bd1f190b238682a9fb721a
  - User and service type management interface
    
    Change-Id: Ie4f66f28ea964cd8a773e7c1c52e5d589762b371
    Issue-ID: USECASEUI-212
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed