Ensure connection in Ingress TLS tests

Ensure connection to NGINX before running tests.
Without ensuring, sometimes the first connection to NGINX would
hang (timeout). The problem is noticable when running tests in
kind.

tests/suite/test_tls.py

@@ -1,7 +1,7 @@
 import pytest
 
 from suite.resources_utils import create_ingress_from_yaml, delete_items_from_yaml, wait_before_test, \
-    create_secret_from_yaml, delete_secret, replace_secret, is_secret_present
+    create_secret_from_yaml, delete_secret, replace_secret, is_secret_present, ensure_connection_to_public_endpoint
 from suite.yaml_utils import get_first_ingress_host_from_yaml, get_name_from_yaml
 from suite.ssl_utils import get_server_certificate_subject
 from settings import TEST_DATA
@@ -58,6 +58,9 @@ def tls_setup(request, kube_apis, ingress_controller_prerequisites, ingress_cont
     ingress_host = get_first_ingress_host_from_yaml(ingress_path)
     secret_name = get_name_from_yaml(f"{test_data_path}/tls-secret.yaml")
 
+    ensure_connection_to_public_endpoint(ingress_controller_endpoint.public_ip, ingress_controller_endpoint.port,
+                                         ingress_controller_endpoint.port_ssl)
+
     def fin():
         print("Clean up TLS setup")
         delete_items_from_yaml(kube_apis, ingress_path, test_namespace)