Fix cert check

test/pytest/test_certs.py

@@ -12,7 +12,7 @@ from OpenSSL import SSL
 
 @pytest.mark.resource
 @pytest.mark.certs
-def test_cert_validation(host, app): # pylint: disable=too-many-statements
+def test_cert_validation(host, resource): # pylint: disable=too-many-statements
     """Checks for proper cluster certs from exposed services.
     Check is executed on the local provisioning machine.
     """
@@ -103,13 +103,13 @@ def test_cert_validation(host, app): # pylint: disable=too-many-statements
         'wordpress': 'www'
     }
 
-    if app == 'all':
+    if resource == 'all':
         apps = list(app_subdomains.keys())
-    elif app == 'kube-prometheus-stack':
+    elif resource == 'kube-prometheus-stack':
         apps = ['grafana', 'prometheus']
     else:
-        assert app in app_subdomains, "Error: Unknown app: {}".format(app)
-        apps = [app]
+        assert resource in app_subdomains, "Error: Unknown app: {}".format(app)
+        apps = [resource]
 
     print('\n')
     for app_name in apps:
@@ -127,4 +127,4 @@ def test_cert_validation(host, app): # pylint: disable=too-many-statements
                                     ['pytest/le-staging-bundle.pem'])
 
         fqdn = app_subdomains[app_name] + '.' + domain
-        assert valid_cert(domain=fqdn, app=app)
+        assert valid_cert(domain=fqdn, app=resource)