Linux Bridge Neutron job - remove vlan options
Linux Bridge Neutron job - remove vlan options

They do not appear to be honored anyway - Linux Bridge by default uses
vxlan and this config stanza did not explicitly disable vxlan. So let's
just use vxlan and delete the vlan cruft that is unused.

Change-Id: I32a09202b429a577bf1e394d36a12e5d335cd653

openstack-infra/project-config,noorul/os-project-config,Tesora/tesora-project-config,dongwenjuan/project-config,dongwenjuan/project-config,Tesora/tesora-project-config,openstack-infra/project-config,noorul/os-project-config