Fix issues with virtual opencontrail computes

Switch off offloadings causing issues to encapsulated traffic
Set global vrouter config (configuration for self issue)

Change-Id: I23da022f657bf45a6f56ebfe5811aadc8222f0c7
Closes-Bug: PROD-16473
diff --git a/classes/cluster/os-ha-contrail/openstack/compute.yml b/classes/cluster/os-ha-contrail/openstack/compute.yml
index 8346f2f..8f15232 100755
--- a/classes/cluster/os-ha-contrail/openstack/compute.yml
+++ b/classes/cluster/os-ha-contrail/openstack/compute.yml
@@ -36,6 +36,8 @@
           enabled: true
           type: eth
           proto: manual
+          pre_up_cmds:
+          - ethtool -K ens4 rx off tx off gro off tso off
         vhost0:
           enabled: true
           type: eth