Description of problem:
=======================
I used packstack to install an openstack deployment (ML2, OVS+VXLAN) as follows:
- 2 Compute nodes
- 1 Neutron networker (L3, DHCP, Metadata)
- 1 Openstack controller (all Openstack services including neutron-server)

The Openstack controller is not a bridged node, thus packstack should not install a Neutron L2 agent on it and therefore a tunnel interface (VXLAN) is not needed. Hence, packstack should not expect to find an IP address configured with that interfece (in our case, eth3).
The openstack services installed on the openstack controller are expected to communicate with the other nodes via the mgmt network (which in our case, routed via eth0).

Version-Release number of selected component (if applicable):
=============================================================
openstack-packstack-2013.2.1-0.28.dev989.el6ost.noarch

How reproducible:
=================
1/1

Steps to Reproduce:
===================
1. Use packstack with the following neutron configuration:

CONFIG_NEUTRON_INSTALL=y
CONFIG_NEUTRON_SERVER_HOST=192.168.160.29
CONFIG_NEUTRON_KS_PW=123456
CONFIG_NEUTRON_DB_PW=123456
CONFIG_NEUTRON_L3_HOSTS=192.168.160.27
CONFIG_NEUTRON_L3_EXT_BRIDGE=br-ex
CONFIG_NEUTRON_DHCP_HOSTS=192.168.160.27
CONFIG_NEUTRON_LBAAS_HOSTS=
CONFIG_NEUTRON_L2_PLUGIN=ml2
CONFIG_NEUTRON_METADATA_HOSTS=192.168.160.27
CONFIG_NEUTRON_METADATA_PW=123456
CONFIG_NEUTRON_ML2_TYPE_DRIVERS=vxlan,vlan
CONFIG_NEUTRON_ML2_TENANT_NETWORK_TYPES=vxlan
CONFIG_NEUTRON_ML2_MECHANISM_DRIVERS=openvswitch
CONFIG_NEUTRON_ML2_FLAT_NETWORKS=*
CONFIG_NEUTRON_ML2_VLAN_RANGES=ext_net:185:185
CONFIG_NEUTRON_ML2_TUNNEL_ID_RANGES=1:1000
CONFIG_NEUTRON_ML2_VXLAN_GROUP=224.0.0.1
CONFIG_NEUTRON_ML2_VNI_RANGES=3000:3100,2000:2100
CONFIG_NEUTRON_L2_AGENT=openvswitch
CONFIG_NEUTRON_LB_TENANT_NETWORK_TYPE=local
CONFIG_NEUTRON_LB_VLAN_RANGES=
CONFIG_NEUTRON_LB_INTERFACE_MAPPINGS=
CONFIG_NEUTRON_OVS_TENANT_NETWORK_TYPE=vxlan
CONFIG_NEUTRON_OVS_VLAN_RANGES=ext_net:185:186
CONFIG_NEUTRON_OVS_BRIDGE_MAPPINGS=ext_net:br-ex
CONFIG_NEUTRON_OVS_BRIDGE_IFACES=br-ex:eth3.185,br-ex:eth3.186
CONFIG_NEUTRON_OVS_TUNNEL_RANGES=1:1000
CONFIG_NEUTRON_OVS_TUNNEL_IF=eth3
CONFIG_NEUTRON_OVS_VXLAN_UDP_PORT=4789

Openstack Controller: 192.168.160.29
Neutron Networker: 192.168.160.27
Compute Nodes: 192.168.160.21,192.168.160.25

Actual results:
===============
Packstack expects a tunnel interface with IP address on a non-bridged node, the openstack controller.
packstack fails with the following error:

ERROR : Error appeared during Puppet run: 192.168.160.29_neutron.pp
Error: Local ip for ovs agent must be set when tunneling is enabled at /var/tmp/packstack/f74cf0afb06a46b9acfbf9c4faa5d053/modules/neutron/manifests/agents/ovs.pp:30 on node <Openstack_Controllr_FQDN>
You will find full trace in log /var/tmp/packstack/20140316-103744-CeaqEE/manifests/192.168.160.29_neutron.pp.log
Please check log file /var/tmp/packstack/20140316-103744-CeaqEE/openstack-setup.log for more information

Expected results:
=================
Packstack should not expect a tunnel interface with IP address on a non-bridged node.

Additional info:
================
As a workaround, configure an IP address on the tunnel interface for the OS controller node.