Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 489b742f855a9248afbbd442eb70c52ba3b36ecc
  - Merge "Add NETWORK_CORRELATOR on network updates async"
  - Add NETWORK_CORRELATOR on network updates async

    added verification for mocked BpmnError
    add unmarshal test missing in commit
    add junit for NetworkAdapter Callback success/failure
    Add NETWORK_CORRELATOR on network updates async etc

    Change-Id: Ib10709ddb61011aec247e9c020b7ee7c42949118
    Issue-ID: SO-1568
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>