Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 400eac6792f0c41d30bef8d118be51a801652b2c
  - Merge "mso to add support for creating the cloud region"
  - mso to add support for creating the cloud region

    Initial check in to support cloud region create
    Add additional junit tests
    Add additional integration tests
    Updated junit to use spy and removed setter method

    Issue-ID: SO-2657
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: I6a93f3b4caf7d640ffa5842981247d284b9013ad