Updated git submodules

Project: netvirt stable/carbon e15d9d2e60eb2845e7910600b6514f7d5d53711d

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 a66d5ee06c599fd77076eff784dcdfb649afd01b..e15d9d2e60eb2845e7910600b6514f7d5d53711d 160000 (submodule)
--- a/docs/submodules/netvirt
+++ b/docs/submodules/netvirt
@@ -1 +1 @@
-Subproject commit a66d5ee06c599fd77076eff784dcdfb649afd01b
+Subproject commit e15d9d2e60eb2845e7910600b6514f7d5d53711d