Issue #27289: Prevent test_urllib2net failures due to EOFError raised by ftplib

Lib/test/support/__init__.py

@@ -1349,7 +1349,8 @@ def transient_internet(resource_name, *, timeout=30.0, errnos=()):
              500 <= err.code <= 599) or
             (isinstance(err, urllib.error.URLError) and
                  (("ConnectionRefusedError" in err.reason) or
-                  ("TimeoutError" in err.reason))) or
+                  ("TimeoutError" in err.reason) or
+                  ("EOFError" in err.reason))) or
             n in captured_errnos):
             if not verbose:
                 sys.stderr.write(denied.args[0] + "\n")