Update git submodules

* Update docs/submodules/sdnvpn from branch 'master'
  - Merge "add resync testcase"
  - add resync testcase

    It is an extention of testcase_11.py to check resync happens properly
    between ODL and OVS when there is no changes from northbound

    JIRA: SDNVPN-175

    Change-Id: I63bd17f5e5fdab7d5ab90a2be2836e02e7dd54fa
    Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index e1372d3..cd1dee3 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit e1372d3c4955a92f36bfb50ae5925dac2fc0b89c
+Subproject commit cd1dee3f51f98adf8fedb50eaa96f785b3a27fa1