[aws] Increase possible wait time for nonmonotonic subnet attributes (#38960)

lib/ansible/modules/cloud/amazon/ec2_vpc_subnet.py

@@ -509,7 +509,7 @@ def ensure_subnet_present(conn, module):
 
 
 def ensure_final_subnet(conn, module, subnet, start_time):
-    for rewait in range(0, 10):
+    for rewait in range(0, 30):
         map_public_correct = False
         assign_ipv6_correct = False
 
@@ -532,7 +532,7 @@ def ensure_final_subnet(conn, module, subnet, start_time):
         if map_public_correct and assign_ipv6_correct:
             break
 
-        time.sleep(3)
+        time.sleep(5)
         subnet = get_matching_subnet(conn, module, module.params['vpc_id'], module.params['cidr'])
 
     return subnet