Fix memory leak in Get bucket replication test

Fixes: #11218

Signed-off-by: Petr Balogh <[email protected]>

tests/functional/object/mcg/test_bucket_replication.py

@@ -1,4 +1,5 @@
 import logging
+import gc
 
 import pytest
 
@@ -492,11 +493,14 @@ def test_unidirectional_bucketclass_replication(
 
             def check_nb_endpoint_logs():
                 for pod in get_noobaa_endpoint_pods():
+                    pod_logs = get_pod_logs(pod.name)
                     if (
                         "The AWS access key Id you provided does not exist in our records"
-                        in get_pod_logs(pod.name)
+                        in pod_logs
                     ):
                         return True
+                    del pod_logs
+                    gc.collect()
                 return False
 
             sample = TimeoutSampler(timeout=360, sleep=10, func=check_nb_endpoint_logs)
@@ -521,12 +525,13 @@ def check_nb_endpoint_logs():
 
             # check in noobaa core logs
             def check_noobaa_core_logs():
-                if "find_rules_updated_longest_time_ago:  []" in get_pod_logs(
-                    get_noobaa_core_pod().name
-                ):
-                    return True
-                else:
-                    return False
+                found = False
+                pod_logs = get_pod_logs(get_noobaa_core_pod().name)
+                if "find_rules_updated_longest_time_ago:  []" in pod_logs:
+                    found = True
+                del pod_logs
+                gc.collect()
+                return found
 
             logger.info(
                 f"Checking the noobaa core logs to see if the replication has "