Updated git submodules

Project: netvirt master 37c5ed8eae135d6be93b277a96568b2a6b421d60

Bug 7451 - VPN service cleanup of Table 17

Whenever a VM is deleted (or) a VPN where a VM
resides in is removed, the dispatcher-table
entries for that VMs VPN Interface were not
getting removed.

The fix here makes sure that dispatcher Table
(Table 17) gets cleaned up by VPN Service.

The related ELAN patch to clean up dispatcher
table for ELAN service entries is here;
https://git.opendaylight.org/gerrit/#/c/57767

Change-Id: I6460b8a12a37236275e72606bc58c4b59db440cb
Signed-off-by: Vivekanandan Narasimhan <n.vivekanandan@ericsson.com>

diff --git a/docs/submodules/netvirt b/docs/submodules/netvirt
index 1d84249e86cf09402280d09361c72760f76ab3f7..37c5ed8eae135d6be93b277a96568b2a6b421d60 160000 (submodule)
--- a/docs/submodules/netvirt
+++ b/docs/submodules/netvirt
@@ -1 +1 @@
-Subproject commit 1d84249e86cf09402280d09361c72760f76ab3f7
+Subproject commit 37c5ed8eae135d6be93b277a96568b2a6b421d60