Add new roles for dvr-vxlan and ceph

Change-Id: I03ff631dfc622cc5d6884e553146f0516e8fd2de
diff --git "a/\173\043 roles \043\175/_linux_network_interface" "b/\173\043 roles \043\175/_linux_network_interface"
index 85de14f..dbb35eb 100644
--- "a/\173\043 roles \043\175/_linux_network_interface"
+++ "b/\173\043 roles \043\175/_linux_network_interface"
@@ -16,6 +16,8 @@
         'tenant_address',
         'tenant_network_netmask',
         'tenant_network_gateway',
+        'external_address',
+        'external_network_netmask',
         'dns_server01',
         'dns_server02',
         'mtu',