Updated git submodules

Project: netvirt master 672838d35375a7669d9d65340dce7c3740fdc29b

Net-odl full-sync. Set router ext gw MAC

During full-sync networking-odl syncs routers before ports. As such,
the MAC of the router's gw port is not available to be set when the
internal netvirt router is written to md-sal. This commit adds logic
to update the router when the port is written.

Change-Id: Ic6b78f77a8352416d3260678dcd6624e2fcf8d68
Signed-off-by: Josh <jhershbe@redhat.com>

diff --git a/docs/submodules/netvirt b/docs/submodules/netvirt
index 0699833a68a59a96c245d1e087b7071bcaf080f6..672838d35375a7669d9d65340dce7c3740fdc29b 160000 (submodule)
--- a/docs/submodules/netvirt
+++ b/docs/submodules/netvirt
@@ -1 +1 @@
-Subproject commit 0699833a68a59a96c245d1e087b7071bcaf080f6
+Subproject commit 672838d35375a7669d9d65340dce7c3740fdc29b