SIENTIAPDE-1646

Update README, requirements, and E2E tests for improved configuration and functionality

- Enhanced the README with updated model configuration examples, including the addition of an alias for production.
- Removed the `requirements-light.txt` file and updated `requirements-local.txt` and `requirements.txt` to replace `asyncua` with `opcua`.
- Refactored E2E test scenarios to utilize scenario input files for better maintainability and clarity.
- Improved test coverage for MinIO offload functionality and added new helper functions for loading scenario inputs.
- Updated `values.yaml` to reflect new global configurations and environment variables for the laborious worker.

input_sample.json

@@ -0,0 +1,72 @@
+{
+  "models": [
+    {
+      "id": "1001",
+      "name": "test-runtime",
+      "active": false,
+      "model_config": {
+        "alias": "production",
+        "retention_minutes": 60,
+        "target": "Square"
+      }
+    }
+  ],
+  "pipelines": [
+    {
+      "schedule_name": "laborious-test-runtime",
+      "model_id": "1001",
+      "workflow_type": "predictions_batch",
+      "frequency": "60s",
+      "max_retry_policy": 1,
+      "query": "select * from sientia_data.laborious_data where model_id = 1 and \"timestamp\" > NOW() - INTERVAL '5 minutes' order by \"timestamp\" desc limit 30;",
+      "retention_time": 60,
+      "write_tags": [],
+      "input_filters": [
+        {
+          "filter_name": "EMPTY_DATA",
+          "policy": "STOP"
+        },
+        {
+          "filter_name": "SPECIFIC_VARIABLES_NULL_VALUES",
+          "policy": "CONTINUE",
+          "config": {
+            "variables": [
+              "Counter"
+            ]
+          }
+        }
+      ],
+      "mlflow_transform_filters": [
+        {
+          "filter_name": "API_ERROR",
+          "policy": "REPEAT"
+        },
+        {
+          "filter_name": "NAN_VALUES",
+          "policy": "STOP"
+        }
+      ],
+      "mlflow_predict_filters": [
+        {
+          "filter_name": "API_ERROR",
+          "policy": "CONTINUE"
+        }
+      ],
+      "path_priority": [
+        "STOP",
+        "CONTINUE",
+        "REPEAT"
+      ],
+      "active": true,
+      "updated_at": {
+        "$date": "2026-05-07T23:35:01.600Z"
+      },
+      "save_transform": false,
+      "pi_web_api_output_config": {},
+      "datetime_columns": [
+        "timestamp",
+        "created_at"
+      ]
+    }
+  ]
+}