Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - Revert "write sdnvpn test result into db"

    This reverts commit 2907946ee8931f749881e48e9601779be50b7e37.

    Turned out the issue requires a different solution.

    Change-Id: I6f7924a9ae7baf924b749b3fd3f2d54132c6e85b
    Signed-off-by: Tim Irnich <tim.irnich@ericsson.com>

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index 2907946..58109fa 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit 2907946ee8931f749881e48e9601779be50b7e37
+Subproject commit 58109fa8f9d9a8eaae3822791440802728c85163