Merge bitcoin/bitcoin#28805: test: Make existing functional tests compatible with --v2transport

35fb9930ad test: enable v2 transport for p2p_timeouts.py (Martin Zumsande)
2c1669c37a test: enable v2 transport for rpc_net.py (Sebastian Falbesoner)
cc961c2695 test: enable v2 transport for p2p_node_network_limited.py (Sebastian Falbesoner)
3598a1b5c9 test: enable --v2transport in combination with --usecli (Martin Zumsande)
68a9001751 test: persist -v2transport over restarts and respect -v2transport=0 (Martin Zumsande)

Pull request description:

  This makes the functional test suite compatible with BIP324, so that
  `python3 test_runner.py --v2transport`
  should succeed (currently, 12 tests fail for me on master).
  Includes two commits by TheStack I found in an old discussion https://github.com/bitcoin/bitcoin/pull/28331#discussion_r1326714164

  Note that even though all tests should pass, the python `p2p.py` module will do v2 connections only after the merge of #24748, so that for now only connections between two full nodes will actually run v2.
  Some of the fixed tests were added with `--v2transport` to the test runner. Though after #24748 we might also want to consider running the entire suite with `--v2transport` in some CI.

ACKs for top commit:
  sipa:
    utACK 35fb9930ad. Thanks for taking care of this.
  achow101:
    ACK 35fb9930ad
  theStack:
    ACK 35fb9930ad
  stratospher:
    ACK 35fb993.

Tree-SHA512: 80dc0bf211fa525ff1d092043aea9f222f14c02e5832a548fb8b83b9ede1fcee03c5e8ade0d05c331bdaa492af9c1cf3d0f0b15b846673c6eacea82dd4cefbc3

test/functional/test_framework/test_framework.py

@@ -507,8 +507,6 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         assert_equal(len(binary_cli), num_nodes)
         for i in range(num_nodes):
             args = list(extra_args[i])
-            if self.options.v2transport and ("-v2transport=0" not in args):
-                args.append("-v2transport=1")
             test_node_i = TestNode(
                 i,
                 get_datadir_path(self.options.tmpdir, i),
@@ -527,6 +525,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
                 start_perf=self.options.perf,
                 use_valgrind=self.options.valgrind,
                 descriptors=self.options.descriptors,
+                v2transport=self.options.v2transport,
             )
             self.nodes.append(test_node_i)
             if not test_node_i.version_is_at_least(170000):
@@ -601,7 +600,7 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
         ip_port = "127.0.0.1:" + str(p2p_port(b))
 
         if peer_advertises_v2 is None:
-            peer_advertises_v2 = self.options.v2transport
+            peer_advertises_v2 = from_connection.use_v2transport
 
         if peer_advertises_v2:
             from_connection.addnode(node=ip_port, command="onetry", v2transport=True)