Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 73c6806802c71c9fb67e7fe3185952dad0cceaa6
  - update usecase-ui image version
    
    Change-Id: Id3a30c2d826fa97e4cd5789d3e6d6bb787b32e43
    Issue-ID: USECASEUI-276
    Signed-off-by: guochuyicmri <guochuyi@chinamobile.com>
    
1 file changed