Deploy failing on multi-node juno branch install

[Matt Thompson]

15:58:29 TASK: [neutron_common | Run iptables checksum fix] ****************************
15:58:29 failed: [jenk-heat-51-node2_neutron_agents_container-e6e03f02] => {"changed": true, "cmd": ["/etc/network/if-up.d/post-up-checksum-rules"], "delta": "0:00:00.059271", "end": "2015-02-23 15:58:29.832627", "rc": 3, "start": "2015-02-23 15:58:29.773356"}
15:58:29 stderr: modprobe: ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file '/lib/modules/3.13.0-37-generic/modules.dep.bin'
15:58:29 ip6tables v1.4.21: can't initialize ip6tables table `mangle': Table does not exist (do you need to insmod?)
15:58:29 Perhaps ip6tables or your kernel needs to be upgraded.
15:58:29
15:58:29 FATAL: all hosts have already failed -- aborting
15:58:29

Looks like ip6_tables isn't getting loaded on the host which houses the neutron_agents container.

[Kevin Carter (kevin-carter)]

This issue is being resolved in the following commits:

- juno: https://review.openstack.org/#/c/158380/
- icehouse: https://review.openstack.org/#/c/158381/