Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to e294eb0aa8e9d2f6eed5a13b771dc00df320439d
  - Service instance lifecycle management
    
    Change-Id: I013d048a4de7bde62978080434cebc1d86d175d4
    Issue-ID: USECASEUI-218
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed