Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 9fd49c5f4538cb9b498abeaa4e7f45993369a2aa
  - Merge "Fix issue in so-bpmn-tasks"
  - Fix issue in so-bpmn-tasks

    Either log or rethrow this exception
    Define a constant instead of duplicating this literal
    Move the string literal on the left side of this string comparison

    Issue-ID: SO-1841
    Change-Id: I828e744be9e71b84d85850d56373e921c174d26b
    Signed-off-by: Parshad Patel <pars.patel@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 7981396..9fd49c5 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7981396ba705aa2d22ecf680f74a462d784c5e56
+Subproject commit 9fd49c5f4538cb9b498abeaa4e7f45993369a2aa