Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 2569fa2f54e4bb5aaeeaa73b73813e4439afb44e
  - Enhanced logic for multilevel list input reading from UUI

    Logic modified to support VF and VFC/group level user input reading
    from the list and automatically incrementing/maintaining index of
    list for fetching data from User input and map to service inputs.

    Change-Id: I9faa7e9a689324e80c1e5123e0d4c2ebedd1bf76
    Issue-ID: SO-1393
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>