Add the kosmos-postgresql and ejabberd backup recipes

nodes/andromeda.kosmos.org.json

@@ -2,8 +2,17 @@
   "run_list": [
     "kosmos-base",
     "kosmos-base::andromeda_firewall",
-    "role[ipfs_cluster_with_tls]"
+    "role[ipfs_cluster_with_tls]",
+    "kosmos-postgresql",
+    "kosmos-ejabberd::backup"
   ],
+  "normal": {
+    "postgresql": {
+      "password": {
+        "postgres": "iezah7ochae9uizu1Isha2Chuok8ra"
+      }
+    }
+  },
   "automatic": {
     "ipaddress": "andromeda.kosmos.org"
   }