Merge bitcoin/bitcoin#23774: tests: Add missing assert_equal import to p2p_add_connections.py

efa115a tests: Add missing assert_equal import to p2p_add_connections.py (Andrew Chow)

Pull request description:

ACKs for top commit:
  MarcoFalke:
    code review ACK efa115a and apologies for missing the silent merge conflict in merge commit 9635760

Tree-SHA512: e5782f9883f37265db4e1977b5df82cc689fb99080cc92888b425937da75050a49a8e196b857333c5382567b5c0439d54ef72f5556aca8de5c1bffdf7b2f8b8b

Author: MarcoFalke

test/functional/p2p_add_connections.py

@@ -6,7 +6,10 @@
 
 from test_framework.p2p import P2PInterface
 from test_framework.test_framework import BitcoinTestFramework
-from test_framework.util import check_node_connections
+from test_framework.util import (
+    assert_equal,
+    check_node_connections,
+)
 
 class P2PFeelerReceiver(P2PInterface):
     def on_version(self, message):