data/{common,type}.yaml.tmpl: Remove duplicate declaration

    $ egrep "^[a-z]" data/type.yaml.tmpl|sort|uniq -d
    cloud::network::api_eth: "%{hiera('internal_netif_ip')}"
    cloud::network::rabbit_hosts: "%{hiera('rabbit_hosts')}"
    cloud::network::rabbit_password: "%{hiera('rabbit_password')}"
    cloud::network::tunnel_eth: "%{hiera('internal_netif_ip')}"

    $ egrep "^[a-z]" data/common.yaml.tmpl|sort|uniq -d
    neutron_metadata_proxy_shared_secret: {{ config.neutron_metadata_proxy_shared_secret }}

Signed-off-by: Dimitri Savineau <dimitri.savineau@enovance.com>