Added csv gainsight dir for persistent storage

Change-Id: I7f477db14886b598ab796a2f91e29d0972d4ac94
Related-Bug: PROD-25814
diff --git a/metadata/service/gainsight/elasticsearch_container.yml b/metadata/service/gainsight/elasticsearch_container.yml
index 0129de2..5f1eb9f 100644
--- a/metadata/service/gainsight/elasticsearch_container.yml
+++ b/metadata/service/gainsight/elasticsearch_container.yml
@@ -7,3 +7,4 @@
       dir:
         config: /srv/volumes/local/gainsight_elasticsearch/config
         crontab: /srv/volumes/local/gainsight_elasticsearch/cron.d
+        csv: /srv/volumes/local/gainsight_elasticsearch/csv