[automation] update elastic stack version for testing 7.16.0-a0af8f2a (…

…#28656)

* [Automation] Update elastic stack version to 7.16.0-a0af8f2a for testing

* Adjust script compilation rate

Co-authored-by: apmmachine <infra-root-apmmachine@elastic.co>
Co-authored-by: Jaime Soriano Pastor <jaime.soriano@elastic.co>

testing/environments/snapshot-oss.yml

@@ -3,7 +3,7 @@
 version: '2.3'
 services:
   elasticsearch:
-    image: docker.elastic.co/elasticsearch/elasticsearch-oss:7.16.0-738085ba-SNAPSHOT
+    image: docker.elastic.co/elasticsearch/elasticsearch-oss:7.16.0-a0af8f2a-SNAPSHOT
     healthcheck:
       test: ["CMD-SHELL", "curl -s http://localhost:9200/_cat/health?h=status | grep -q green"]
       retries: 300
@@ -17,7 +17,7 @@ services:
     - "indices.id_field_data.enabled=true"
 
   logstash:
-    image: docker.elastic.co/logstash/logstash-oss:7.16.0-738085ba-SNAPSHOT
+    image: docker.elastic.co/logstash/logstash-oss:7.16.0-a0af8f2a-SNAPSHOT
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:9600/_node/stats"]
       retries: 600
@@ -27,7 +27,7 @@ services:
     - ./docker/logstash/pki:/etc/pki:ro
 
   kibana:
-    image: docker.elastic.co/kibana/kibana-oss:7.16.0-738085ba-SNAPSHOT
+    image: docker.elastic.co/kibana/kibana-oss:7.16.0-a0af8f2a-SNAPSHOT
     healthcheck:
       test: ["CMD-SHELL", "curl -s http://localhost:5601/api/status?v8format=true | grep -q '\"overall\":{\"level\":\"available\"'"]
       retries: 600

testing/environments/snapshot.yml

@@ -3,7 +3,7 @@
 version: '2.3'
 services:
   elasticsearch:
-    image: docker.elastic.co/elasticsearch/elasticsearch:7.16.0-738085ba-SNAPSHOT
+    image: docker.elastic.co/elasticsearch/elasticsearch:7.16.0-a0af8f2a-SNAPSHOT
     healthcheck:
       test: ["CMD-SHELL", "curl -s http://localhost:9200/_cat/health?h=status | grep -q green"]
       retries: 300
@@ -14,17 +14,15 @@ services:
     - "transport.host=127.0.0.1"
     - "http.host=0.0.0.0"
     - "xpack.security.enabled=false"
-    - "script.context.template.max_compilations_rate=unlimited"
-    - "script.context.ingest.cache_max_size=2000"
-    - "script.context.processor_conditional.cache_max_size=2000"
-    - "script.context.template.cache_max_size=2000"
+    # We want something as unlimited compilation rate, but 'unlimited' is not valid.
+    - "script.max_compilations_rate=100000/1m"
     - "action.destructive_requires_name=false"
     # Disable geoip updates to prevent golden file test failures when the database
     # changes and prevent race conditions between tests and database updates.
     - "ingest.geoip.downloader.enabled=false"
 
   logstash:
-    image: docker.elastic.co/logstash/logstash:7.16.0-738085ba-SNAPSHOT
+    image: docker.elastic.co/logstash/logstash:7.16.0-a0af8f2a-SNAPSHOT
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:9600/_node/stats"]
       retries: 600
@@ -34,7 +32,7 @@ services:
       - ./docker/logstash/pki:/etc/pki:ro
 
   kibana:
-    image: docker.elastic.co/kibana/kibana:7.16.0-738085ba-SNAPSHOT
+    image: docker.elastic.co/kibana/kibana:7.16.0-a0af8f2a-SNAPSHOT
     healthcheck:
       test: ["CMD-SHELL", "curl -s http://localhost:5601/api/status?v8format=true | grep -q '\"overall\":{\"level\":\"available\"'"]
       retries: 600