Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 58b68bac19d6cd56209207d970bad721f802b94f
  - Merge "Run groovy bpmn/vcpe tests"
  - Run groovy bpmn/vcpe tests

    Fixed groovy tests in bpmn/vcpe/scripts to be runnable
    Added them to build
    Reformatted the code and removed unnecessary imports

    Change-Id: Id85c88bee666fc7f513042e0a4e83f337ab2765c
    Issue-ID: SO-1649
    Signed-off-by: k.kazak <k.kazak@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 6e16eb3..58b68ba 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 6e16eb32ae29581f04e5241defa8f833e35d4410
+Subproject commit 58b68bac19d6cd56209207d970bad721f802b94f