Update git submodules

* Update docs/submodules/sdnvpn from branch 'stable/gambia'
  - Find the ODL owner of the BGP entity in the
    cluster in TC 3

    After new Apex release Opendaylight run in container.
    This fix finds the ODL owner of the BGP entity in the cluster for
    containerised installations.

    JIRA: SDNVPN-238
    JIRA: SDNVPN-234

    Change-Id: Iec1abfe3e0be899ab51fe52057b394a4fa15cc49
    Signed-off-by: dimitris.tsiolakis <dmts@intracom-telecom.com>
    (cherry picked from commit 9d550e5108399bc1f85186956dabc6cbe3a3ec85)

diff --git a/docs/submodules/sdnvpn b/docs/submodules/sdnvpn
index 95dad3f..092e158 160000 (submodule)
--- a/docs/submodules/sdnvpn
+++ b/docs/submodules/sdnvpn
@@ -1 +1 @@
-Subproject commit 95dad3f4a73a22988c7a9b4694ce0d7e90cd8147
+Subproject commit 092e15806c6825affdc6810e602be702799928c7