SIENTIAPDE-1110

Refactor Activities class to remove Kafka and Druid dependencies, simplifying initialization. Update values.yaml to set replica count to 1 for reduced resource usage. Adjust Redis activity to set TTL to None for better data retention. Remove unused Kafka and Druid activity files and their associated tests, streamlining the codebase.

tests/activities/test_redis.py

@@ -87,7 +87,7 @@ async def test_group_and_hold_data_new_key(redis_activity):
     # Verify set was called with correct arguments
     redis_activity.set.assert_called_once()
     args, kwargs = redis_activity.set.call_args
-    assert args[0] == 'test_pipeline_test_schedule'
+    assert args[0] == 'held_data_test_pipeline_test_schedule'
     assert args[1] == {
         'sensor1': 25.5,
         'sensor2': 30.0,
@@ -139,7 +139,7 @@ async def test_group_and_hold_data_update_existing(redis_activity):
     # Verify set was called with correct arguments
     redis_activity.set.assert_called_once()
     args, kwargs = redis_activity.set.call_args
-    assert args[0] == 'test_workflow_test_schedule'
+    assert args[0] == 'held_data_test_workflow_test_schedule'
     assert args[1] == {
         'sensor1': 25.5,
         'sensor2': 28.0,