Replace ensure-bridge w/ os-net-config.

This updates the init-neutron-ovs script so that it
dynamically writes out an os-net-config config file
and then runs os-net-config to perform the required
network configuration.

Change-Id: I5f51ecb5c64fc9c13eabc16b2b43b5dda1b38d65
Copy static files for packaged installs

Packaged installs result in tuskar-ui compressed static files being
placed in /var/www/horizon/static/dashboard, alongside horizon static
files.  We need to copy them over to
/usr/share/openstack-dashboard/static/dashboard

Change-Id: I369cba710c01ee09584d6f3de1c9aa7195dfcb69
Increase rabbitmq timeout

This change increases the timeout waiting for rabbitmq from 3 to 60
seconds. I've observed some instances of it taking 20-30 seconds before,
so I think we need to be more generous here.

Change-Id: I908eb75790d8b90410ed1b3fa018aec9630633d3
Short circuit init-neutron-ovs

If os-net-config data is detected we want to prevent this
script from doing anything because network models
are being passed in via heat (generated via Tuskar)

Change-Id: Ia67e70ef6355d50e2b41bbc9d1e2ba0269305515
Remove hack to start openvswitch

Updates bin/init-neutron-ovs so that it no longer tries to
startup openvswitch. This should no longer be required
because the openvswitch element is automatically pulled
in via the os-net-config element dependency.

Change-Id: Ibed45fc077756a5da6cb78494c2cdd21cda52364
Merge "Replace ensure-bridge w/ os-net-config."
Merge "Short circuit init-neutron-ovs"
Merge "Remove hack to start openvswitch"
Merge "Copy static files for packaged installs"
Merge "Increase rabbitmq timeout"