Update git submodules

* Update docs/submodules/sdnvpn from branch 'stable/danube'
  - Clean always and change order

    Change-Id: Ic9e0d374a4fe5278888b28fe2694c546840d55b4
    Signed-off-by: Nikolas Hermanns <nikolas.hermanns@ericsson.com>
    (cherry picked from commit 88331de3fb9375d316acba7b160ddf2a9beab5b2)

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index 7005583..5eded7b 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit 70055839b7e69e7cb02681c98c11f905331a1a4f
+Subproject commit 5eded7bd29cd9100e70c9211a9cbc4914cf2ddf6