Add default global nginx configuration

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

group_vars/nginx.yml

+---
+glob_nginx:
+  servers:
+    server_name:
+      - "default"
+      - "_"
+    root: "/var/www/html"
+    locations:
+      - filter: "/"

group_vars/nginx_rtmp.yml

----
-
-glob_nginx_rtmp:
-  uri: stream.crans.org

hosts

@@ -86,10 +86,8 @@ monitoring.adm.crans.org
 [nginx]
 charybde.adm.crans.org
 
-[nginx_rtmp]
-fluxx.adm.crans.org
-
 [nginx:children]
+mailman
 reverseproxy
 
 [ntp_server]