[enh] Add new fallback nodes

app/config.json

@@ -34,6 +34,14 @@
         "host": "g1.duniter.fr",
         "port": 443
       },
+      {
+        "host": "g1.monnaielibreoccitanie.org",
+        "port": 443
+      },
+      {
+        "host": "g1.le-sou.org",
+        "port": 443
+      },
       {
         "host": "g1.duniter.org",
         "port": 443
@@ -100,12 +108,25 @@
       "host": "g1.duniter.fr",
       "port": 443
     },
-    "fallbackNodes": [{
-        "host": "g1.duniter.org",
+    "fallbackNodes": [
+      {
+        "host": "g1.duniter.fr",
         "port": 443
       },
       {
-        "host": "g1.duniter.fr",
+        "host": "g1.monnaielibreoccitanie.org",
+        "port": 443
+      },
+      {
+        "host": "g1.le-sou.org",
+        "port": 443
+      },
+      {
+        "host": "duniter.normandie-libre.fr",
+        "port": 443
+      },
+      {
+        "host": "g1.duniter.org",
         "port": 443
       }
     ],