Update git submodules

* Update docs/submodules/sdc/sdc-distribution-client.git from branch 'master'
  to 7a7a30233f3d495c4dbb0e1629251a8ee57d9d84
  - Automation adds index.rst
    
    Issue-ID: CIMAN-376
    
    Change-Id: Ib671007e07291e8502c01a1d74af172988680288
    Signed-off-by: lf-jobbuilder <releng+lf-jobbuilder@linuxfoundation.org>
    
1 file changed