Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 160c72c0944c2551a72eab2931452d029373f145
  - Merge "Fix instance instantiation for e2e/NS"
  - Fix instance instantiation for e2e/NS
    
    Change-Id: Icd1cc946fd0a25de2751ad4f465f27ae3d89fe50
    Issue-ID: USECASEUI-252
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed