Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to b22867810b980e06dbbb98fdce603c744cafa32e
  - Merge "Fix instance instantiation for CCVPN"
  - Fix instance instantiation for CCVPN
    
    Change-Id: I25107cef4a4d6d814c0bb3df24a46e9336c53543
    Issue-ID: USECASEUI-220
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed