[dns] Add rss service

ansible/roles/unbound/files/service.zones

@@ -30,3 +30,4 @@ local-data: "funkwhale.service	IN	A	192.168.1.214"
 local-data: "wx.service		IN	A	192.168.1.122"
 local-data: "search.service	IN	A	192.168.1.113"
 local-data: "elastic.service	IN	A	192.168.1.176"
+local-data: "rss.service	IN	A	192.168.1.117"