Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to de16e84e7119f4f414306fea6c84f8f0d86520a5
  - Merge "Fix UUI frontend docker image creation failure"
  - Fix UUI frontend docker image creation failure
    
    Change-Id: I717e982d453bb6e30ec4f2b0e278ebb043fcef71
    Issue-ID: USECASEUI-273
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed