Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to af150f32a5644719f7b29a1be513190c865b5f74
  - Merge "Removed unused private method getProcessInstanceId() to prevent static analyzer warning"
  - Removed unused private method getProcessInstanceId()
    to prevent static analyzer warning

    Issue-ID: SO-1841
    Signed-off-by: Oleksandr Moliavko <o.moliavko@samsung.com>
    Change-Id: Iab8cba14eb519f8c36f4f3ddd3fde2e50ac7147b

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 8fee4fd..af150f3 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 8fee4fd7a88ec025e142bafa50cc7e0dc8610b0d
+Subproject commit af150f32a5644719f7b29a1be513190c865b5f74