Do not modify in place a string which is an attribute of the node

Especially as it's used for naming a service resource. The result is
that we get:

service: no such service neutron-linuxbridge-agent
Use helpers from new crowbar-openstack cookbook
Merge pull request #143 from vuntz/do-not-change-neutron-agent

Do not modify in place a string which is an attribute of the node
Merge pull request #144 from vuntz/openstack-helper

Use helpers from new crowbar-openstack cookbook
Use CrowbarPacemakerService provider for neutron-lbaas-agent when HA

For some reason, we had forgotten this...
Set auth_insecure config option in metadata_agent.ini

https://bugzilla.novell.com/show_bug.cgi?id=848323
Merge pull request #146 from vuntz/pacemaker-provider-for-lbaas

Use CrowbarPacemakerService provider for neutron-lbaas-agent when HA
Make config files owned by root:neutron, instead of neutron:root

We don't want the neutron user to be able to write the files.
Use attributes from the neutron node, not the current node

This is important for the nova nodes :-)
Merge pull request #148 from vuntz/bnc848323

Set auth_insecure config option in metadata_agent.ini
Merge pull request #149 from vuntz/fix-owner

Make config files owned by root:neutron, instead of neutron:root
Fix wrong group on config file breaking ovs setup

The group was specified twice, with last one winning, and because the
file is 0640, this broke the setup.
Merge pull request #150 from vuntz/permission-rework

Fix wrong group on config file breaking ovs setup