Merge pull request #3632 from edx/bbeggs/run_migrations

prefix migration output with the database name

playbooks/continuous_delivery/run_migrations.yml

@@ -69,7 +69,7 @@
     when: APPLICATION_NAME != "edxapp"
 
   - name: migrate to apply any edxapp unapplied migrations
-    shell: '{{ COMMAND_PREFIX }} {{ SUB_APPLICATION_NAME }} run_migrations --database "{{ item }}" --settings "{{ EDX_PLATFORM_SETTINGS }}" --output_file "{{ temp_output_dir.stdout }}/{{ migration_result }}"'
+    shell: '{{ COMMAND_PREFIX }} {{ SUB_APPLICATION_NAME }} run_migrations --database "{{ item }}" --settings "{{ EDX_PLATFORM_SETTINGS }}" --output_file "{{ temp_output_dir.stdout }}/{{ item }}_{{ migration_result }}"'
     become_user: "{{ APPLICATION_USER }}"
     when: APPLICATION_NAME == "edxapp" and item != "read_replica"
     with_items: "{{ edxapp_databases.keys() }}"