AAI is no longer starting up on HEAT because the
docker image elasticsearch:6.1.2 no longer exists.
Update to point to new elasticsearch repo location.
Change-Id: If0c0c7d0dc9414247b5fe32d017661b2cf9ed358
Issue-ID: INT-586
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
         max-size: "30m"
         max-file: "5"
   aai.elasticsearch.simpledemo.openecomp.org:
-    image: elasticsearch:6.1.2
+    image: docker.elastic.co/elasticsearch/elasticsearch:6.1.2
     hostname: aai.elasticsearch.simpledemo.openecomp.org
     container_name: elasticsearch
     ports: