Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 9a8d19f57bf2d676f6a77bbe5b2145b39113551d
  - Merge "Update release version for usecase-ui"
  - Update release version for usecase-ui
    
    Change-Id: Idd70e35f1d3bfbea604a235f5f7b24c4cbac3b95
    Issue-ID: USECASEUI-323
    Signed-off-by: shentao999 <shentao@chinamobile.com>
    
1 file changed