ES 7.17.15 sync with pom.xml es.version property (#8811)

Author: jodygarnett

es/README.md

@@ -2,8 +2,8 @@
 
 ## Manual installation
 
-1. Download Elasticsearch (at least 7.6.2 for Geonetwork 4.0.x) from https://www.elastic.co/downloads/elasticsearch
-and copy to the ES module, e.g., es/elasticsearch-7.6.2
+1. Download Elasticsearch (at least 7.17.15 for Geonetwork 4.0.x) from https://www.elastic.co/downloads/elasticsearch
+and copy to the ES module, e.g., es/elasticsearch-7.17.15
 
 2. Start ES using:
 
@@ -35,13 +35,13 @@ and copy to the ES module, e.g., es/elasticsearch-7.6.2
 1. Use docker pull to download the image (you can check version in the :file:`pom.xml` file):
 
    ```
-   docker pull docker.elastic.co/elasticsearch/elasticsearch:7.6.2
+   docker pull docker.elastic.co/elasticsearch/elasticsearch:7.17.15
    ```
 
 2. Use docker run, leaving 9200 available:
 
    ```
-   docker run -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.6.2
+   docker run -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.17.15
    ```
 
 3. Check that elasticsearch is running by visiting http://localhost:9200 in a browser

es/docker-compose.yml

@@ -1,8 +1,6 @@
-version: '3'
-
 services:
   elasticsearch:
-    image: docker.elastic.co/elasticsearch/elasticsearch:7.6.2
+    image: docker.elastic.co/elasticsearch/elasticsearch:7.17.15
     container_name: elasticsearch
     environment:
       - cluster.name=docker-cluster
@@ -18,7 +16,7 @@ services:
     ports:
       - "9200:9200"
   kibana:
-    image: docker.elastic.co/kibana/kibana:7.6.2
+    image: docker.elastic.co/kibana/kibana:7.17.15
     container_name: kibana
     ports:
       - "5601:5601"