SIENTIAPDE-1030

Add unit tests for orchestrator activities and workflows

- Implement tests for Activities class, covering initialization and prepare_activity method.
- Create tests for Couchbase class, including successful and failed query loading.
- Add tests for SlotManager class, verifying OPC slot loading and active ingestor retrieval.
- Develop tests for TemporalManager class, focusing on schedule loading functionality.
- Introduce tests for Orchestrator class, ensuring proper execution of workflow activities.
- Establish a new test suite for orchestrator activities and workflows in the tests directory.

samples.json

@@ -0,0 +1,35 @@
+{
+    "models": {
+        "1": {
+            "name": "Demo Model-Demo2"
+        }
+    },
+    "pipelines": {
+        "1": {
+            "name": "scouter-opcua-pipeline",
+            "model_id": 1,
+            "workflow_type": "scouter",
+            "frequency": "5s",
+            "max_retry_policy": 1,
+
+            "read_tags": [
+                {
+                    "tag_name": "Counter",
+                    "aggr_func": "avg",
+                    "data_range": [-100, 100]
+                }
+            ],
+            "filters": [
+                {
+                    "filter_name": "OUT_OF_BOUNDS_FILTER",
+                    "policy": "DISCARD"
+                },
+                {
+                    "filter_name": "NULL_VALUES_FILTER",
+                    "policy": "DISCARD"
+                }
+            ],
+            "tag_retention_minutes": 60
+        }
+    }
+}