Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - resync and ecmp testcase failure

    This provide fix for resync and ecmp test case failures
    at the CI master runs. Please have a look at the comments
    in each testcase for more details.

    Change-Id: I26c40da144e34a48ad44897988675db8d37c062a
    Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index b7a8df9..45194ef 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit b7a8df9145600fbd12658ac829c813bd20455b95
+Subproject commit 45194eff156234cea416b94d7988a1ccf8a891e6