Add metadata service support to controller node

The metadata service is working as the following:
- metadata is being served by nova-api on controller at port 8775.
- VM instance requests metadata by 169.254.169.254 (eg, curl http://169.254.169.254/latest/meta-data)
- metadata request comes to neutron-ns-metadata-proxy on controller in dhcp network name space.
- neutron-ns-metadata-proxy forwards the request to neutron-metadata-agent through a unix domain socket (/var/lib/neutron/metadata_proxy).
- neutron-metadata-agent sends the request to nova-api on port 8775 to be serviced.

To support metadata service, neutron-ns-metadata-proxy is baked into the controller image. Also neutron-metadata-agent startup script
(/etc/init.d/neutron-metadata-agent) and config file (/etc/neutron/metadata_agent.ini) are added to start up metadata agent at system
initialization. dhcp_agent.ini and nova.conf are updated as well.

A README.metadata is added in the Documentation/ directory.

Signed-off-by: Andy Ning <andy.ning@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta-openstack/recipes-devtools/python/python-nova_git.bb b/meta-openstack/recipes-devtools/python/python-nova_git.bb
index 0c6686d..0af38db 100644
--- a/meta-openstack/recipes-devtools/python/python-nova_git.bb
+++ b/meta-openstack/recipes-devtools/python/python-nova_git.bb
@@ -81,6 +81,8 @@ do_install_append() {
     sed -e "s:%DB_USER%:${DB_USER}:g" -i ${NOVA_CONF_DIR}/nova.conf
     sed -e "s:%DB_PASSWORD%:${DB_PASSWORD}:g" -i ${NOVA_CONF_DIR}/nova.conf
 
+    sed -e "s:%METADATA_SHARED_SECRET%:${METADATA_SHARED_SECRET}:g" -i ${NOVA_CONF_DIR}/nova.conf
+
     sed -e "s:%CONTROLLER_IP%:${CONTROLLER_IP}:g" -i ${NOVA_CONF_DIR}/nova.conf
     sed -e "s:%CONTROLLER_HOST%:${CONTROLLER_HOST}:g" -i ${NOVA_CONF_DIR}/nova.conf