Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 7c0489bd1585b1a3fb97248397eccd72ee644e82
  - Merge "Multicloud VNF adapter use updated multicloud API"
  - Multicloud VNF adapter use updated multicloud API

    Update the Multicloud plugin adapter to use the
    the enhanced multicloud infra_workload API.
    Mainly involves adding the user_directives and
    the vf-module model IDs to the call.

    Change-Id: I7ab78a8a304dbd61a5743ec67bb839037861ef9d
    Issue-ID: SO-1446
    Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>