Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to c0fbd45596e038ecceb77422c4cae840ad114efa
  - Support for volume groups on replace VF Module.

    Support for volume groups on replace VF Module.
    [MSO-8375 R2002} Add full JUnit coverage for replaceVFModule scenarios,
    add replace changes to general macro data.
    Fix a JUnit to pass correct parameters to a method.
    Add back setting volume group id for new volume group on replace action.

    Issue-ID: SO-2577
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: I73289da21e0c7de7451b63e99e184692e800aaf0