Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 3971d0d0f3848763c50fb589832713123606c2b0
  - feat:Modify pom file and dcokerfile
    
    Change-Id: Id977b8d7b37e929556078d53f95b26da7b807c02
    Issue-ID: USECASEUI-368
    Signed-off-by: cyuamber <xuranyjy@chinamobile.com>
    
1 file changed