Reorder subscription creation steps in add_node workflow for SUB_DISABLE mode

- Moved creation of downstream subscriptions (N3 → N1/N2) to the
  near-end of the workflow.

- Ensures that N3 completes its initial sync before establishing
  outbound replication paths.

- Set synchronize_structure and synchronize_data to false on these subscriptions
  to avoid resending data to nodes that originally provided it.

Creating these subscriptions before N3 completes its initial sync
may cause data to replicate back to N1/N2, potentially resulting in conflicts —
which should not happen, as N3 has just synced from N1/N2.

Author: rasifr

spockctrl/workflows/add_node.json

@@ -18,62 +18,6 @@
         "on_failure": {}
       }
     },
-    {
-      "spock": {
-        "node": "n1",
-        "command": "CREATE SUBSCRIPTION",
-        "description": "Create a subscription (sub_n3_n1) on (n1) for n3->n1",
-        "sleep": 0,
-        "args": [
-          "--sub_name=sub_n3_n1",
-          "--provider_dsn=host=127.0.0.1 dbname=pgedge port=5433 user=pgedge password=spockpass",
-          "--replication_sets=ARRAY['default', 'default_insert_only', 'ddl_sql']",
-          "--synchronize_structure=true",
-          "--synchronize_data=true",
-          "--forward_origins='{}'::text[]",
-          "--apply_delay='0'::interval",
-          "--force_text_transfer=false",
-          "--enabled=true"
-        ],
-        "on_success": {},
-        "on_failure": {}
-      }
-    },
-    {
-      "spock": {
-        "node": "n2",
-        "command": "CREATE SUBSCRIPTION",
-        "description": "Create a subscription (sub_n3_n2) on (n2) for n3->n2",
-        "sleep": 0,
-        "args": [
-          "--sub_name=sub_n3_n2",
-          "--provider_dsn=host=127.0.0.1 dbname=pgedge port=5433 user=pgedge password=spockpass",
-          "--replication_sets=ARRAY['default', 'default_insert_only', 'ddl_sql']",
-          "--synchronize_structure=false",
-          "--synchronize_data=true",
-          "--forward_origins='{}'::text[]",
-          "--apply_delay='0'::interval",
-          "--force_text_transfer=false",
-          "--enabled=true"
-        ],
-        "on_success": {},
-        "on_failure": {}
-      }
-    },
-    {
-      "sql": {
-        "node": "n2",
-        "ignore_errors": false,
-        "command": "SQL",
-        "description": "Wait for apply worker on n2 subscription",
-        "sleep": 0,
-        "args": [
-          "--sql=SELECT spock.wait_for_apply_worker($n2.sub_create, 1000);"
-        ],
-        "on_success": {},
-        "on_failure": {}
-      }
-    },
     {
       "spock": {
         "node": "n3",
@@ -227,6 +171,48 @@
         "on_failure": {}
       }
     },
+    {
+      "spock": {
+        "node": "n1",
+        "command": "CREATE SUBSCRIPTION",
+        "description": "Create a subscription (sub_n3_n1) on (n1) for n3->n1",
+        "sleep": 0,
+        "args": [
+          "--sub_name=sub_n3_n1",
+          "--provider_dsn=host=127.0.0.1 dbname=pgedge port=5433 user=pgedge password=spockpass",
+          "--replication_sets=ARRAY['default', 'default_insert_only', 'ddl_sql']",
+          "--synchronize_structure=false",
+          "--synchronize_data=false",
+          "--forward_origins='{}'::text[]",
+          "--apply_delay='0'::interval",
+          "--force_text_transfer=false",
+          "--enabled=true"
+        ],
+        "on_success": {},
+        "on_failure": {}
+      }
+    },
+    {
+      "spock": {
+        "node": "n2",
+        "command": "CREATE SUBSCRIPTION",
+        "description": "Create a subscription (sub_n3_n2) on (n2) for n3->n2",
+        "sleep": 0,
+        "args": [
+          "--sub_name=sub_n3_n2",
+          "--provider_dsn=host=127.0.0.1 dbname=pgedge port=5433 user=pgedge password=spockpass",
+          "--replication_sets=ARRAY['default', 'default_insert_only', 'ddl_sql']",
+          "--synchronize_structure=false",
+          "--synchronize_data=false",
+          "--forward_origins='{}'::text[]",
+          "--apply_delay='0'::interval",
+          "--force_text_transfer=false",
+          "--enabled=true"
+        ],
+        "on_success": {},
+        "on_failure": {}
+      }
+    },
     {
       "sql": {
         "node": "n3",