Code review comment for lp://staging/~openstack-charmers/charms/trusty/nova-compute/0mq

FYI, icehouse deploy tests fail with:
(juno passes)

13:06:05 2015-01-20 13:06:05 [ERROR] deployer.env: The following units had errors:
13:06:05 unit: nova-compute/1: machine: 15 agent-state: error details: hook failed: "config-changed"

2015-01-20 13:06:02 INFO juju-log Rendering from template: nova.conf
2015-01-20 13:06:02 INFO config-changed Traceback (most recent call last):
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/config-changed", line 346, in <module>
2015-01-20 13:06:02 INFO config-changed main()
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/config-changed", line 340, in main
2015-01-20 13:06:02 INFO config-changed hooks.execute(sys.argv)
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/charmhelpers/core/hookenv.py", line 528, in execute
2015-01-20 13:06:02 INFO config-changed self._hooks[hook_name]()
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/charmhelpers/core/host.py", line 296, in wrapped_f
2015-01-20 13:06:02 INFO config-changed f(*args)
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/config-changed", line 125, in config_changed
2015-01-20 13:06:02 INFO config-changed CONFIGS.write_all()
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/charmhelpers/contrib/openstack/templating.py", line 261, in write_all
2015-01-20 13:06:02 INFO config-changed [self.write(k) for k in six.iterkeys(self.templates)]
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/charmhelpers/contrib/openstack/templating.py", line 250, in write
2015-01-20 13:06:02 INFO config-changed _out = self.render(config_file)
2015-01-20 13:06:02 INFO config-changed File "/var/lib/juju/agents/unit-nova-compute-1/charm/hooks/charmhelpers/contrib/openstack/templating.py", line 240, in render
2015-01-20 13:06:02 INFO config-changed return template.render(ctxt)
2015-01-20 13:06:02 INFO config-changed File "/usr/lib/python2.7/dist-packages/jinja2/environment.py", line 969, in render
2015-01-20 13:06:02 INFO config-changed return self.environment.handle_exception(exc_info, True)
2015-01-20 13:06:02 INFO config-changed File "/usr/lib/python2.7/dist-packages/jinja2/environment.py", line 742, in handle_exception
2015-01-20 13:06:02 INFO config-changed reraise(exc_type, exc_value, tb)
2015-01-20 13:06:02 INFO config-changed File "templates/icehouse/nova.conf", line 29, in top-level template code
2015-01-20 13:06:02 INFO config-changed {% include "parts/zeromq" %}
2015-01-20 13:06:02 INFO config-changed jinja2.exceptions.TemplateNotFound: parts/zeromq
2015-01-20 13:06:02 ERROR juju.worker.uniter uniter.go:486 hook failed: exit status 1