Update git submodules

* Update docs/submodules/ovsnfv from branch 'master'
  - Add and update apex sdn and ovs scenarios to Danube 1.0
    Include two odl_l3 scenarios and the no-sdn l2 ha scenario.

    Change-Id: I6a3d447b42a2d69ce3e50e007a66e22668a1383c
    Signed-off-by: Thomas F Herbert <therbert@redhat.com>

diff --git a/docs/submodules/ovsnfv b/docs/submodules/ovsnfv
index ab6bd20..3412a64 160000 (submodule)
--- a/docs/submodules/ovsnfv
+++ b/docs/submodules/ovsnfv
@@ -1 +1 @@
-Subproject commit ab6bd208cdc38e7b1594824b9d233e894f529f25
+Subproject commit 3412a645cdea8c4eb28e8406ed161e8140011d0f