Make snapshots incremental

templates/elasticsearch-snapshot

@@ -2,4 +2,4 @@
 
 {% set ES_INDICES = elasticsearch.snapshot.indices|join(',') %}
 
-curl -X PUT 'http://elastic:{{ elasticsearch.users.elastic|default("") }}@localhost:9200/_snapshot/Backup/snapshot_1?wait_for_completion=true' -H 'Content-Type: application/json' -d '{"indices": "{{ ES_INDICES }}","ignore_unavailable": true,"include_global_state": false}'
+curl -X PUT 'http://elastic:{{ elasticsearch.users.elastic|default("") }}@localhost:9200/_snapshot/Backup/%3Csnapshot-%7Bnow%2Fd%7D%3E?wait_for_completion=true' -H 'Content-Type: application/json' -d '{"indices": "{{ ES_INDICES }}","ignore_unavailable": true,"include_global_state": false}'