improve wait_for_node_start until 20 mins

Author: Roman

tests/e2e_tests/conftest.py

@@ -48,7 +48,7 @@ def wait_for_node_start(process, pattern):
 
             print(line.strip())
             # 10 min as timeout
-            if int(time.time()) - timestamp > 10 * 60:
+            if int(time.time()) - timestamp > 20 * 60:
                 print("Subtensor not started in time")
                 raise TimeoutError
             if pattern.search(line):