Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to d642660b5eeed87a3f1de737e7cf7840fd2bf121
  - Test case failure CSAR file corrected
    
    Fix the vSBC CSAR file as per NFV SOL0001 v2.5.1
    
    Change-Id: I637312e91452ffa47f5a9fd14152c3966a39beaf
    Issue-ID: SDC-2170
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    
1 file changed