Not populating the data_location and target_list when they aren't passed to...

Not populating the data_location and target_list when they aren't passed to the workflow template, they were causing naughty values

shared/workspaces/alembic/versions/3eae1178cace_add_curator_workflow.py

@@ -45,13 +45,13 @@ ${SBIN_PATH}/ingest_envoy curate --$2 $1
 """
 
 metadata_json = """{
-  "product_locator": "{{product_locator}}",
-  "data_location": "{{data_location}}",
-  "product_type": "{{product_type}}",
-  "target_list": ["{{target_list}}"],
+  "product_locator": "{{product_locator}}",{{#data_location}}
+  "data_location": "{{data_location}}",{{/data_location}}
+  "product_type": "{{product_type}}",{{#target_list}}
+  "target_list": {{target_list}},{{/target_list}}
   "projectMetadata": {
     "telescope": "{{telescope}}",
-    "projectCode": "{{project_code}}"
+    "projectCode": "{{projectCode}}"
   }
 }
 """