Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to dcca3afc8f9c4de72e84a7573932544996438c7c
  - Merge "WorkflowAction, traverseNetworkCollection refactoring stage 2"
  - WorkflowAction, traverseNetworkCollection refactoring stage 2

    - extract one function to traverseNetworkCollectionResourceCustomization

    Issue-ID: SO-2634
    Signed-off-by: Krzysztof Gajewski <krzysztof.gajewski@nokia.com>
    Change-Id: I869174d8e022603374fa86ba4405ea2611b4dfd1

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index d91569f..dcca3af 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit d91569f2bbb8e4bf99c88bfd5883058818cf203e
+Subproject commit dcca3afc8f9c4de72e84a7573932544996438c7c