Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - add lable for both scenarios

    Change-Id: I9b4cd79a40a6c0c0b057f5eb3cb2a4197f3264e7
    Signed-off-by: Nikolas Hermanns <nikolas.hermanns@ericsson.com>

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index 036dc38..352fe7c 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit 036dc38f8ffc4353c15d6b42658a2236b41702f7
+Subproject commit 352fe7c1a6206478f53b053e9f06ae57d6635c16