Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "add os-nosdn-ovs scenario"
  - add os-nosdn-ovs scenario

    This scenario is to install ovs on neutron agent and compute nodes for
    providing networking capabilities without being managed by Opendaylight.

    Change-Id: Iacc2f61ce1ffca248acdca378a23d65a91452828
    Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index ebcc3d3..54afc4c 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit ebcc3d3ca28e4412ba9c6c1340bd7c01e4328414
+Subproject commit 54afc4c3a060793d68b362584a7ab0788ff53617