Update config templates for Juno release

It seems though that iptables is too old on SLE11 for this. I get this in neutron-openvswitch-agent.log with ```enable_ipset = False```:

```
Command: ['sudo', '/usr/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip6tables-restore', '-c']
Exit code: 2
Stdout: ''
Stderr: "ip6tables-restore v1.4.6: Couldn't load match `set':/usr/lib64/xtables/libip6t_set.so: cannot open shared object file: No such file or directory\n\nError occurred at line: 31\nTry `ip6tables-restore -h' or 
'ip6tables-restore --help' for more information.\n"
2014-11-28 11:16:58.373 5058 ERROR neutron.agent.linux.iptables_manager [req-11ddbe7e-4bd0-4a71-a878-39546e4ebf47 None] IPTablesManager.apply failed to apply the following set of iptables rules:
      1. # Generated by ip6tables-save v1.4.6 on Fri Nov 28 11:16:58 2014
      2. *filter
      3. :INPUT ACCEPT [10170:6143996]
      4. :FORWARD ACCEPT [0:0]
[..]
     30. [0:0] -A neutron-openvswi-ie62cb1af-e -m state --state RELATED,ESTABLISHED -j RETURN
     31. [0:0] -A neutron-openvswi-ie62cb1af-e -m set --match-set IPv6dd4c3ceb-6ebe-49a8-a src -j RETURN
     32. [0:0] -A neutron-openvswi-ie62cb1af-e -j neutron-openvswi-sg-fallback
[..]
     50.
```

So I'd suggest to disable it for until we figured out if there is a way to make this work on SLE11.