Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to c6c5958e9827e9ba5f4df8ca5862c3770116813d
  - Merge "Remove service recipes from service object"
  - Remove service recipes from service object

    - Added back in the @MapKey = action for the Map.
    - Added test methods back in for the ServiceRecipe.
    - Added getter and setter for Service object.
    - Added code to reference the Service object from ServiceRecipe.
    - Remove service recipes from service object since service_recipes are
    manually managed.

    Change-Id: Ife50d4e6e46da95e0b6f964fdcfda8084da38dea
    Issue-ID: SO-1612
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>