Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 9caf997f3e2381e41b41ea0a9f07564d234b79a8
  - Remove vCPE with TOSCA from usecase list
    
    Signed-off-by: Yang Xu <yang.xu@futurewei.com>
    Issue-ID: INT-1104
    Change-Id: Ia72ffa9e13ef62fea8a23da1ec4a2a757a11fabc
    
1 file changed