Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to fa7bc1af69c58120fa5a0746d75a4c08bccfd986
  - logic to delete the ordered service take-1
    
    Issue-ID: USECASEUI-387
    
    Signed-off-by: seshukm <seshu.kumar.m@huawei.com>
    Change-Id: Ib72e9393e2fe86e0455237c69c57d0650798793e
    
1 file changed