pytest: fix flake in test_remote_addr_port

```
FAILED tests/test_connection.py::test_remote_addr_port - TimeoutError: Unable to find "[re.compile('Update our node_announcement for discovered address')]" in logs.
```

Because it can happen before the "Already have funding locked in" message:

```
lightningd-2 2023-10-24T22:07:02.018Z DEBUG   gossipd: Update our node_announcement for discovered address: 127.0.0.1:1234
lightningd-2 2023-10-24T22:07:02.019Z DEBUG   lightningd: Plugin chanbackup returned from peer_connected hook call
lightningd-2 2023-10-24T22:07:02.019Z DEBUG   035d2b1192dfba134e10e540875d366ebc8bc353d5aa766b80c090b39c3a5d885d-chan#2: Peer has reconnected, state CHANNELD_NORMAL: connecting subd
lightningd-2 2023-10-24T22:07:02.036Z DEBUG   035d2b1192dfba134e10e540875d366ebc8bc353d5aa766b80c090b39c3a5d885d-channeld-chan#2: pid 63142, msgfd 67
lightningd-2 2023-10-24T22:07:02.037Z DEBUG   035d2b1192dfba134e10e540875d366ebc8bc353d5aa766b80c090b39c3a5d885d-chan#2: Already have funding locked in (and ready to announce)
```

Also, wait_for_log() asserts itself, no need to assert on result.

Signed-off-by: Rusty Russell <[email protected]>

tests/test_connection.py

@@ -236,11 +236,11 @@ def test_remote_addr_port(node_factory, bitcoind):
     l2.daemon.wait_for_log("Already have funding locked in")
     l3.restart()
     l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
-    l2.daemon.wait_for_log("Already have funding locked in")
 
     # if ip discovery would have been enabled, we would have send an updated
     # node_annoucement by now. Check we didn't...
-    assert l2.daemon.wait_for_log("Update our node_announcement for discovered address")
+    l2.daemon.wait_for_logs(["Already have funding locked in",
+                             "Update our node_announcement for discovered address"])
     info = l2.rpc.getinfo()
     assert len(info['address']) == 1
     assert info['address'][0]['type'] == 'ipv4'