SIENTIAPDE-1049

Update ingestor and data manager for improved shutdown handling and logging

- Incremented project version in quality gate configuration.
- Commented out ingestor service in docker-compose for clarity.
- Enhanced main loop in app.py to handle exit signals and exceptions.
- Added shutdown methods in Ingestor and DataManager classes for graceful resource cleanup.
- Updated unit tests to validate shutdown behavior and exception handling.
- Introduced coverage configuration to omit specific files.

tests/unit/managers/test_opc_manager.py

@@ -188,7 +188,7 @@ def test_disconnect_success(opc_manager_subscribed):
     assert opc_manager_subscribed.client is None
 
 
-def test_disconnect_error(opc_manager_subscribed):
+def test_disconnect_error_unsubscribe(opc_manager_subscribed):
     opc_manager_subscribed.client = MagicMock()
     opc_manager_subscribed.subscriptions['sub1'] = MagicMock(
         delete=MagicMock(side_effect=Exception("Test error"))
@@ -197,11 +197,24 @@ def test_disconnect_error(opc_manager_subscribed):
     opc_manager_subscribed.disconnect()
 
     opc_manager_subscribed.subscriptions['sub1'].delete.assert_called_once()
-    opc_manager_subscribed.client.disconnect.assert_not_called()
+    opc_manager_subscribed.client = None
     opc_manager_subscribed.logger.error.assert_called_once_with(
         "Failed to clean up subscription: Test error")
 
 
+def test_disconnect_error(opc_manager_subscribed):
+    opc_manager_subscribed.client = MagicMock()
+    opc_manager_subscribed.client.disconnect = MagicMock(
+        side_effect=Exception("Test error"))
+
+    opc_manager_subscribed.disconnect()
+
+    opc_manager_subscribed.subscriptions['sub1'].delete.assert_called_once()
+    opc_manager_subscribed.client = None
+    opc_manager_subscribed.logger.error.assert_called_once_with(
+        "Failed to disconnect from OPC UA server: Test error")
+
+
 def test_datachange_notification(opc_manager_subscribed):
     data = MagicMock(
         monitored_item=MagicMock(