Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to a1f8a0c1ce64e90653397c5ce8d4949fe0244d07
  - Merge "Async vnf adapter response not getting to bpmn"
  - Async vnf adapter response not getting to bpmn

    Async vnf adapter response is not getting to bpmn @OneWay web
    methods in VnfAdapterNotifyServiceImpl class do not work with the
    @Async  handleCallback() method in CallbackHandlerService. Updating
    code to call the non-async version of the (overloaded) handleCallback
    method until we can figure out how to properly do @oneway to @async.
    Added junits to all methods in VnfAdapterNotifyServiceimpl

    Issue-ID: SO-2347
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: I0e8b4a60addfc5e742c77e671377fa152ecce4db