test(unit/puller): Disable stream mode test in CI

The actor test with stream mode enabled is very flaky when run on CI.
As this problem rarely occurs locally, only disable the test when a CI environment is detected.

Author: gfieni

tests/unit/puller/test_puller_actor.py

@@ -28,11 +28,14 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import logging
+import os
 from datetime import datetime, timezone
 
+import pytest
+
+from powerapi.actor.message import StartMessage, ErrorMessage, OKMessage
 from powerapi.database import ReadableDatabase
 from powerapi.filter import Filter
-from powerapi.actor.message import StartMessage, ErrorMessage, OKMessage
 from powerapi.puller import PullerActor
 from powerapi.report import Report
 from tests.utils.db import SilentFakeDB
@@ -128,6 +131,7 @@ def test_puller_with_multiple_reports_filter():
     assert dispatcher_catch_all.get_num_received_data() == num_reports
 
 
+@pytest.mark.skipif(os.getenv("CI") == "true", reason="This test is too flaky to be run in CI")
 def test_puller_with_stream_mode():
     """
     Test that the puller send reports to the dispatcher and stay alive waiting for new reports.