Mock out tunnel_sync in test to avoid sleeping
Mock out tunnel_sync in test to avoid sleeping

The tunnel_sync call in the daemon loop for the ovs tunnel
tests blocks for 30 seconds. This patch mocks it out to stop
that.

Closes-Bug: #1340570
Change-Id: I58c3907ed564413a8251bc1bb7922e25f673db18

cloudbase/neutron-virtualbox,shahbazn/neutron,Metaswitch/calico-neutron,skyddv/neutron,blueboxgroup/neutron,pnavarro/neutron,leeseuljeong/leeseulstack_neutron,silenci/neutron,eayunstack/neutron,JioCloud/neutron,SamYaple/neutron,suneeth51/neutron,pnavarro/neutron,waltBB/neutron_read,Metaswitch/calico-neutron,paninetworks/neutron,sebrandon1/neutron,leeseuljeong/leeseulstack_neutron,CiscoSystems/neutron,jacknjzhou/neutron,shahbazn/neutron,virtualopensystems/neutron,gkotton/neutron,skyddv/neutron,SamYaple/neutron,Stavitsky/neutron,javaos74/neutron,gkotton/neutron,paninetworks/neutron,MaximNevrov/neutron,openstack/neutron,mmnelemane/neutron,infobloxopen/neutron,huntxu/neutron,swdream/neutron,magic0704/neutron,waltBB/neutron_read,eonpatapon/neutron,dhanunjaya/neutron,Stavitsky/neutron,redhat-openstack/neutron,vveerava/Openstack,projectcalico/calico-neutron,cloudbase/neutron,openstack/neutron,suneeth51/neutron,mandeepdhami/neutron,asgard-lab/neutron,leeseuljeong/leeseulstack_neutron,SmartInfrastructures/neutron,igor-toga/local-snat,jumpojoy/neutron,jerryz1982/neutron,CiscoSystems/neutron,rdo-management/neutron,leeseulstack/openstack,cernops/neutron,watonyweng/neutron,mattt416/neutron,vivekanand1101/neutron,eonpatapon/neutron,bigswitch/neutron,noironetworks/neutron,klmitch/neutron,igor-toga/local-snat,wolverineav/neutron,yuewko/neutron,mahak/neutron,infobloxopen/neutron,bigswitch/neutron,javaos74/neutron,NeCTAR-RC/neutron,neoareslinux/neutron,eayunstack/neutron,wenhuizhang/neutron,chitr/neutron,cernops/neutron,JianyuWang/neutron,takeshineshiro/neutron,jerryz1982/neutron,wolverineav/neutron,antonioUnina/neutron,rdo-management/neutron,JianyuWang/neutron,openstack/neutron,cisco-openstack/neutron,noironetworks/neutron,leeseulstack/openstack,dims/neutron,huntxu/neutron,miyakz1192/neutron,adelina-t/neutron,swdream/neutron,blueboxgroup/neutron,asgard-lab/neutron,vveerava/Openstack,yanheven/neutron,jumpojoy/neutron,SmartInfrastructures/neutron,apporc/neutron,mandeepdhami/neutron,aristanetworks/neutron,dhanunjaya/neutron,wenhuizhang/neutron,antonioUnina/neutron,sebrandon1/neutron,mahak/neutron,mmnelemane/neutron,magic0704/neutron,blueboxgroup/neutron,NeCTAR-RC/neutron,mattt416/neutron,MaximNevrov/neutron,vivekanand1101/neutron,aristanetworks/neutron,yanheven/neutron,mahak/neutron,silenci/neutron,CiscoSystems/neutron,adelina-t/neutron,projectcalico/calico-neutron,vveerava/Openstack,watonyweng/neutron,cisco-openstack/neutron,chitr/neutron,redhat-openstack/neutron,leeseulstack/openstack,barnsnake351/neutron,miyakz1192/neutron,yuewko/neutron,virtualopensystems/neutron,dims/neutron,sasukeh/neutron,neoareslinux/neutron,gkotton/neutron,jacknjzhou/neutron,apporc/neutron,cloudbase/neutron,glove747/liberty-neutron,virtualopensystems/neutron,alexandrucoman/vbox-neutron-agent,JioCloud/neutron,takeshineshiro/neutron,sasukeh/neutron,klmitch/neutron,cloudbase/neutron-virtualbox,alexandrucoman/vbox-neutron-agent,glove747/liberty-neutron,barnsnake351/neutron,bgxavier/neutron,bgxavier/neutron