Update git submodules

Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 164fd9e2e14af9cc8a0e59628200c7e6aeb0473f
  - Merge "Fix runtime bugs in bpmn groovy"
  - Fix runtime bugs in bpmn groovy

    DoDeleteVfModuleV2: non-existing variable uri (was renamed to resourceUri)
    DoUpdateNetworkInstance: queryIdResponse type is expected to be L3Network
    UpdateVfModuleVolumeInfraV1: non-existing variable cloudOwner
    Include tests for those fixes to build

    Change-Id: Icaea91260fbf6603f134df893a64ec1ca5ac40ab
    Issue-ID: SO-1649
    Signed-off-by: k.kazak <k.kazak@samsung.com>