Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - removing multiple labels

    Change-Id: I28fe4db7598c20ca7be90bc7cd57bf0d9770847b
    Signed-off-by: Nikolas Hermanns <nikolas.hermanns@ericsson.com>

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index c008020..036dc38 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit c0080201984842b64b91ea3cb0fc96ca03fe303c
+Subproject commit 036dc38f8ffc4353c15d6b42658a2236b41702f7