Relax expected error check (securefederatedai#1036)

Signed-off-by: Shah, Karan <[email protected]>

tests/github/pki_insecure_client.py

@@ -2,6 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0
 from pathlib import Path
 import time
+import logging
 import sys
 import shutil
 import subprocess
@@ -17,8 +18,7 @@
 CA_PASSWORD = 'qwerty'
 DIRECTOR_SUBJECT_NAME = 'localhost'
 WORKSPACE_PATH = Path('tests/github/interactive_api_director/experiments/pytorch_kvasir_unet/')
-EXPECTED_ERROR = ('Handshake failed with fatal error SSL_ERROR_SSL: error:100000f7:'
-                  'SSL routines:OPENSSL_internal:WRONG_VERSION_NUMBER.')
+EXPECTED_ERROR = ('Handshake failed with fatal error')
 
 
 def start_ca_server():
@@ -135,9 +135,8 @@ def start_envoy(tls=False):
             # Expectation is that secure server won't let insecure client connect
             while True:
                 tmp = director.stderr.readline().decode('utf-8')
-                if tmp == '':
-                    sys.exit(1)
                 if EXPECTED_ERROR in tmp:
+                    print('Handshake failed for insecure connections as expected.')
                     break
         finally:
             director.kill()