[8.18] (backport #19078) chore: Update apm-server.yml to reflect default ES compression (#19110)

* chore: Update apm-server.yml to reflect default ES compression (#19078)

(cherry picked from commit 43ea45a)

# Conflicts:
#	apm-server-fips.yml

* Delete apm-server-fips.yml

---------

Co-authored-by: Carson Ip <carsonip@users.noreply.github.com>

Author: mergify[bot]

apm-server.docker.yml

@@ -328,7 +328,7 @@ output.elasticsearch:
   #enabled: true
 
   # Set gzip compression level.
-  #compression_level: 0
+  #compression_level: 5
 
   # Protocol - either `http` (default) or `https`.
   #protocol: "https"
@@ -368,6 +368,7 @@ output.elasticsearch:
   #timeout: 90
 
   # The bulk request size threshold, in bytes, before flushing to Elasticsearch.
+  # If compression is enabled, this is compressed bytes.
   # The value must have a suffix, e.g. `"2MB"`. The default is `1MB`.
   #flush_bytes: 1MB
 

apm-server.yml

@@ -328,7 +328,7 @@ output.elasticsearch:
   #enabled: true
 
   # Set gzip compression level.
-  #compression_level: 0
+  #compression_level: 5
 
   # Protocol - either `http` (default) or `https`.
   #protocol: "https"
@@ -368,6 +368,7 @@ output.elasticsearch:
   #timeout: 90
 
   # The bulk request size threshold, in bytes, before flushing to Elasticsearch.
+  # If compression is enabled, this is compressed bytes.
   # The value must have a suffix, e.g. `"2MB"`. The default is `1MB`.
   #flush_bytes: 1MB