base: use linux system roles network role for hosts that define network_connections

This is VASTLY better than the hack we have in base now to try and setup
ifcfg files. It uses a standard role that has lots of options and does
the right thing with NetworkManager. Ideally we would switch everything
to this, but lets try it here first to see. It should work with bridges,
etc as well.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

inventory/host_vars/buildhw-a64-01.iad2.fedoraproject.org

@@ -3,3 +3,26 @@ gw: 10.3.170.254
 eth1_ip: 10.3.170.121
 eth1_ipv4_gw: 10.3.170.254
 datacenter: iad2
+
+network_connections:
+  - name: eth0
+    state: down
+    type: ethernet
+  - name: eth1
+    state: up
+    type: ethernet
+    autoconnect: yes
+    ip:
+      address: 10.3.170.121/24
+      gateway4: 10.3.170.254
+      dns:
+      - 10.3.163.33
+      - 10.3.163.34
+      dns_search:
+      - iad2.fedoraproject.org
+      - fedoraproject.org
+      dhcp4: no
+      auto6: no
+  - name: eth2
+    state: down
+    type: ethernet