Merge pull request #312 from ward-resa/wip/issue309

stage_external_sources Comparing source_name of the node instead of the name of the node

macros/common/stage_external_sources.sql

@@ -17,7 +17,7 @@
                             {% do sources_to_stage.append(node) %}
                         {% endif %}
                     {% else %}
-                        {% if src == node.source_name %}
+                        {% if src == node.name %}
                             {% do sources_to_stage.append(node) %}
                         {% endif %}
                     {% endif %}