fix(logs): return a response when steps requested (#660)

Closes #659

Author: CameronMcClymont

reana_workflow_controller/rest/workflows_status.py

@@ -150,6 +150,7 @@ def get_workflow_logs(workflow_id_or_name, paginate=None, **kwargs):  # noqa
         steps = None
         if request.is_json:
             steps = request.json
+
         if steps:
             workflow_logs = {
                 "workflow_logs": None,
@@ -184,18 +185,18 @@ def get_workflow_logs(workflow_id_or_name, paginate=None, **kwargs):  # noqa
                 for s in workflow.services
             }
 
-            return (
-                jsonify(
-                    {
-                        "workflow_id": workflow.id_,
-                        "workflow_name": get_workflow_name(workflow),
-                        "logs": json.dumps(workflow_logs),
-                        "user": user_uuid,
-                        "live_logs_enabled": REANA_OPENSEARCH_ENABLED,
-                    }
-                ),
-                200,
-            )
+        return (
+            jsonify(
+                {
+                    "workflow_id": workflow.id_,
+                    "workflow_name": get_workflow_name(workflow),
+                    "logs": json.dumps(workflow_logs),
+                    "user": user_uuid,
+                    "live_logs_enabled": REANA_OPENSEARCH_ENABLED,
+                }
+            ),
+            200,
+        )
 
     except ValueError:
         return (