Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - Refactor imports and invocation of main function
    
    In all testcases there are some inconcistencies of
    import statements. Additionally the main function
    of each testcase should be called through
    sys.exit(main())
    
    JIRA: SDNVPN-173
    
    Change-Id: I6fdf0dc6598ca4789b6de6b50d1b8b85a8de923c
    Signed-off-by: panageo2 <panageo@intracom-telecom.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
-Subproject 3752ba88c0abdf35f3a4f5e20849ddd4dcf3277
+Subproject 9815cc6597daa6f50a38a04579036e3eeb5c79a