Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - Removing peering testcase for Apex

    Change-Id: Ifad3f84fcb0c5dfa07aca43d74a027e3522abb87
    Signed-off-by: Nikolas Hermanns <nikolas.hermanns@ericsson.com>

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index 180024b..c008020 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit 180024bb19dcc52469db87bf92980674fa5f65c2
+Subproject commit c0080201984842b64b91ea3cb0fc96ca03fe303c