[tests] Make wait_until timeout 60 seconds by default

Author: jnewbery

test/functional/test_framework/mininode.py

@@ -1358,6 +1358,8 @@ def __repr__(self):
 
 # Helper function
 def wait_until(predicate, *, attempts=float('inf'), timeout=float('inf')):
+    if attempts == float('inf') and timeout == float('inf'):
+        timeout = 60
     attempt = 0
     elapsed = 0