Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 1d4225938f4975fa49d8ed8718f878f682d9b2bd
  - Service instance lifecycle management
    
    Change-Id: Ia4d422bcd68f12942fbcf5b9a7c19d713f927270
    Issue-ID: USECASEUI-218
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed