Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 8d5ff3d30de0c774fd8048fb36a451b206681f1b
  - Support OTN Domain Management
    
    Change-Id: Id40528f0ff2d9cf855dc564ccef8ff9cc3be5e47
    Issue-ID: USECASEUI-226
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed