bpo-41561: Fix testing with OpenSSL 1.0.2 (GH-25355) (GH-25858)

Signed-off-by: Christian Heimes <christian@python.org>
(cherry picked from commit 3447750)

Co-authored-by: Christian Heimes <christian@python.org>

Author: miss-islington

Lib/test/test_ssl.py

@@ -157,7 +157,10 @@ def is_ubuntu():
     def seclevel_workaround(*ctxs):
         """"Lower security level to '1' and allow all ciphers for TLS 1.0/1"""
         for ctx in ctxs:
-            if ctx.minimum_version <= ssl.TLSVersion.TLSv1_1:
+            if (
+                hasattr(ctx, "minimum_version") and
+                ctx.minimum_version <= ssl.TLSVersion.TLSv1_1
+            ):
                 ctx.set_ciphers("@SECLEVEL=1:ALL")
 else:
     def seclevel_workaround(*ctxs):