Use Chef methods for enabling and starting the ovs-cleanup service

On RHEL and SUSE, the init script ovs-cleanup is shipped alongside
the packages, so we can just use that one and use standard Chef
methods for enabling the service.
Integrated bootstrap templating
Added dynamic table for switches, ports are still missing
Merge pull request #6 from dirkmueller/ovs_cleanup

Use Chef methods for enabling and starting th eovs-cleanup service
Merge pull request #14 from tboerger/feature/bootstrap

Bootstrap integration
setting rdo repo properly
we don't need separate api=paste for rhel/centos since common is fit to rhel/centos distribution
upgrade config files to Havana
create separate plugin config files even when not installing from git
Removed unused file
Added trigger to hide cisco ports and switch mode to vlan in case of openvswitch selection
set external_network_bridge in l3_agent.ini
Removed outdated action
Make dhcp_agent.ini and metadata_agent.ini templates closer to upstream

There's no change, just all the comments from the upstream config file
to make it easier to diff things.
fix vlan attributes not being passed to the ovs plugin template
fix missing attributes in linuxbridge config file
Finalized bootstrap integration with dynamic tables
Merge pull request #23 from vuntz/upstream-templates

Make dhcp_agent.ini and metadata_agent.ini templates closer to upstream
set sql connection in ovs plugin conf
Renamed node search by role method