Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to e6eb3d56d89e46eb8f29e7865d25f13bd4671144
  - feat: Release new docker image
    
    Change-Id: I12098fccf3b3268df63f3578e02142d26b354f31
    Issue-ID: USECASEUI-441
    Signed-off-by: cyuamber <xuranyjy@chinamobile.com>
    
1 file changed