Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 2bfc7618524a89dfd3bd89fff72247b99f06ba8f
  - Merge "User and service type management interface"
  - User and service type management interface
    
    Change-Id: I03106abecf56dd1b94efd35a192c9db6f77925e3
    Issue-ID: USECASEUI-212
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed