VMware: add in DVS VXLAN support
VMware: add in DVS VXLAN support

The neutron network will be a VLAN port group or a VXLAN port group.
In the case of the latter the backend adds a VXLAX prefix to the
port group name.

The prefix is  'vxw-<dvs moref>-<virtual wiremoref>-sid-'

The patch supports both types of networks and enables VM's to have
network connectivity.

Change-Id: Icb93585eb486d4b6c8f141fd133971e2b0968f92

vmturbo/nova,iuliat/nova,tudorvio/nova,kimjaejoong/nova,sebrandon1/nova,gooddata/openstack-nova,vladikr/nova_drafts,rajalokan/nova,gooddata/openstack-nova,yosshy/nova,alvarolopez/nova,JianyuWang/nova,cernops/nova,mikalstill/nova,thomasem/nova,j-carpentier/nova,raildo/nova,mmnelemane/nova,MountainWei/nova,varunarya10/nova_test_latest,Metaswitch/calico-nova,jianghuaw/nova,thomasem/nova,tangfeixiong/nova,barnsnake351/nova,eayunstack/nova,isyippee/nova,edulramirez/nova,tangfeixiong/nova,cloudbase/nova,sebrandon1/nova,yosshy/nova,alexandrucoman/vbox-nova-driver,Francis-Liu/animated-broccoli,openstack/nova,mikalstill/nova,tianweizhang/nova,akash1808/nova_test_latest,klmitch/nova,tianweizhang/nova,Yusuke1987/openstack_template,adelina-t/nova,devendermishrajio/nova,cloudbase/nova-virtualbox,affo/nova,Yusuke1987/openstack_template,zaina/nova,MountainWei/nova,BeyondTheClouds/nova,badock/nova,watonyweng/nova,openstack/nova,hanlind/nova,BeyondTheClouds/nova,alaski/nova,belmiromoreira/nova,projectcalico/calico-nova,dims/nova,vmturbo/nova,CEG-FYP-OpenStack/scheduler,hanlind/nova,Juniper/nova,mahak/nova,dawnpower/nova,kimjaejoong/nova,felixma/nova,CloudServer/nova,shail2810/nova,takeshineshiro/nova,klmitch/nova,klmitch/nova,cloudbase/nova,JianyuWang/nova,blueboxgroup/nova,akash1808/nova,cernops/nova,openstack/nova,adelina-t/nova,varunarya10/nova_test_latest,rajalokan/nova,nikesh-mahalka/nova,rajalokan/nova,maelnor/nova,tealover/nova,Francis-Liu/animated-broccoli,rahulunair/nova,double12gzh/nova,ted-gould/nova,phenoxim/nova,rahulunair/nova,orbitfp7/nova,mandeepdhami/nova,noironetworks/nova,phenoxim/nova,Stavitsky/nova,mikalstill/nova,berrange/nova,double12gzh/nova,fnordahl/nova,JioCloud/nova,Tehsmash/nova,cyx1231st/nova,noironetworks/nova,zzicewind/nova,raildo/nova,angdraug/nova,Juniper/nova,shail2810/nova,belmiromoreira/nova,apporc/nova,eonpatapon/nova,NeCTAR-RC/nova,mahak/nova,jianghuaw/nova,mgagne/nova,JioCloud/nova,hanlind/nova,barnsnake351/nova,dawnpower/nova,joker946/nova,LoHChina/nova,mandeepdhami/nova,alvarolopez/nova,klmitch/nova,rahulunair/nova,affo/nova,alaski/nova,joker946/nova,cyx1231st/nova,watonyweng/nova,bigswitch/nova,j-carpentier/nova,bigswitch/nova,whitepages/nova,felixma/nova,TwinkleChawla/nova,orbitfp7/nova,silenceli/nova,TwinkleChawla/nova,eayunstack/nova,dims/nova,Juniper/nova,silenceli/nova,gooddata/openstack-nova,Juniper/nova,projectcalico/calico-nova,CCI-MOC/nova,LoHChina/nova,devendermishrajio/nova_test_latest,fnordahl/nova,mgagne/nova,eonpatapon/nova,akash1808/nova,redhat-openstack/nova,jeffrey4l/nova,JioCloud/nova_test_latest,cloudbase/nova,Metaswitch/calico-nova,rajalokan/nova,jianghuaw/nova,Tehsmash/nova,bgxavier/nova,CCI-MOC/nova,badock/nova,apporc/nova,ruslanloman/nova,alexandrucoman/vbox-nova-driver,gooddata/openstack-nova,maelnor/nova,scripnichenko/nova,zzicewind/nova,zaina/nova,ruslanloman/nova,vladikr/nova_drafts,JioCloud/nova_test_latest,vmturbo/nova,devendermishrajio/nova,tealover/nova,cloudbase/nova-virtualbox,angdraug/nova,ted-gould/nova,sebrandon1/nova,isyippee/nova,blueboxgroup/nova,NeCTAR-RC/nova,tudorvio/nova,devendermishrajio/nova_test_latest,nikesh-mahalka/nova,zhimin711/nova,petrutlucian94/nova,berrange/nova,whitepages/nova,yatinkumbhare/openstack-nova,mahak/nova,takeshineshiro/nova,vmturbo/nova,BeyondTheClouds/nova,edulramirez/nova,iuliat/nova,Stavitsky/nova,petrutlucian94/nova,jeffrey4l/nova,mmnelemane/nova,bgxavier/nova,yatinkumbhare/openstack-nova,CEG-FYP-OpenStack/scheduler,zhimin711/nova,cernops/nova,scripnichenko/nova,akash1808/nova_test_latest,jianghuaw/nova,redhat-openstack/nova,CloudServer/nova