[nantes] set site and cluster in production state

data/grid5000/sites/nantes/nantes.json

@@ -7,7 +7,7 @@
   "location": "Nantes, France",
   "longitude": -1.520547,
   "name": "Nantes",
-  "production": false,
+  "production": true,
   "security_contact": "support-staff@lists.grid5000.fr",
   "sys_admin_contact": "support-staff@lists.grid5000.fr",
   "type": "site",

generators/input/sites/nantes/clusters/econome.rb

@@ -4,7 +4,7 @@ site :nantes do |site_uid|
     model "Dell PowerEdge C6220"
     created_at Time.parse("2014-04-16").httpdate
     kavlan true
-    production false
+    production true
 
     18.times do |i|
       node "#{cluster_uid}-#{i+1}" do |node_uid|

generators/input/sites/nantes/nantes.rb

@@ -12,5 +12,5 @@ site :nantes do |site_uid|
   compilation_server false
   kavlan_ip_range "10.40.0.0/14"
   virt_ip_range "10.176.0.0/14"
-  production false
+  production true
 end