scripted-diff: Rename mininode_lock to p2p_lock

-BEGIN VERIFY SCRIPT-
sed -i 's/mininode_lock/p2p_lock/g' $(git grep -l "mininode_lock")
-END VERIFY SCRIPT-

test/functional/p2p_getaddr_caching.py

@@ -14,7 +14,7 @@ from test_framework.messages import (
 )
 from test_framework.mininode import (
     P2PInterface,
-    mininode_lock
+    p2p_lock
 )
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
@@ -44,7 +44,7 @@ class AddrReceiver(P2PInterface):
         self.received_addrs = None
 
     def get_received_addrs(self):
-        with mininode_lock:
+        with p2p_lock:
             return self.received_addrs
 
     def on_addr(self, message):