test: Add functional tests for sendtxrcncl message from outbound

test/functional/test_framework/test_node.py

@@ -618,7 +618,7 @@ class TestNode():
 
         return p2p_conn
 
-    def add_outbound_p2p_connection(self, p2p_conn, *, p2p_idx, connection_type="outbound-full-relay", **kwargs):
+    def add_outbound_p2p_connection(self, p2p_conn, *, wait_for_verack=True, p2p_idx, connection_type="outbound-full-relay", **kwargs):
         """Add an outbound p2p connection from node. Must be an
         "outbound-full-relay", "block-relay-only", "addr-fetch" or "feeler" connection.
 
@@ -640,8 +640,9 @@ class TestNode():
             p2p_conn.wait_for_connect()
             self.p2ps.append(p2p_conn)
 
-            p2p_conn.wait_for_verack()
-            p2p_conn.sync_with_ping()
+            if wait_for_verack:
+                p2p_conn.wait_for_verack()
+                p2p_conn.sync_with_ping()
 
         return p2p_conn