charmhelpers sync to get fix for precise haproxy ipv6

hooks/charmhelpers/contrib/openstack/context.py

@@ -491,6 +491,7 @@ class HAProxyContext(OSContextGenerator):
             ctxt['haproxy_client_timeout'] = config('haproxy-client-timeout')
 
         if config('prefer-ipv6'):
+            ctxt['ipv6'] = True
             ctxt['local_host'] = 'ip6-localhost'
             ctxt['haproxy_host'] = '::'
             ctxt['stat_port'] = ':::8888'

hooks/charmhelpers/contrib/openstack/neutron.py

@@ -152,9 +152,15 @@ def neutron_plugins():
                                         database=config('neutron-database'),
                                         relation_prefix='neutron',
                                         ssl_dir=NEUTRON_CONF_DIR)],
-            'services': ['calico-compute', 'bird', 'neutron-dhcp-agent'],
+            'services': ['calico-felix',
+                         'bird',
+                         'neutron-dhcp-agent',
+                         'nova-api-metadata'],
             'packages': [[headers_package()] + determine_dkms_package(),
-                         ['calico-compute', 'bird', 'neutron-dhcp-agent']],
+                         ['calico-compute',
+                          'bird',
+                          'neutron-dhcp-agent',
+                          'nova-api-metadata']],
             'server_packages': ['neutron-server', 'calico-control'],
             'server_services': ['neutron-server']
         }

hooks/charmhelpers/contrib/openstack/templates/haproxy.cfg

@@ -38,7 +38,9 @@ listen stats {{ stat_port }}
 {% for service, ports in service_ports.items() -%}
 frontend tcp-in_{{ service }}
     bind *:{{ ports[0] }}
+    {% if ipv6 -%}
     bind :::{{ ports[0] }}
+    {% endif -%}
     {% for frontend in frontends -%}
     acl net_{{ frontend }} dst {{ frontends[frontend]['network'] }}
     use_backend {{ service }}_{{ frontend }} if net_{{ frontend }}