docs: Prepare Changelog for 7.9.2 (elastic#21229)

* Close changelog for 7.9.2

* Update CHANGELOG.next.asciidoc

* Apply suggestions from code review

CHANGELOG.asciidoc

@@ -3,6 +3,47 @@
 :issue: https://github.com/elastic/beats/issues/
 :pull: https://github.com/elastic/beats/pull/
 
+[[release-notes-7.9.2]]
+=== Beats version 7.9.2
+https://github.com/elastic/beats/compare/v7.9.1...v7.9.2[View commits]
+
+==== Breaking changes
+
+*Affecting all Beats*
+
+- Autodiscover doesn't generate any configuration when a variable is missing. Previously it generated an incomplete configuration. {pull}20898[20898]
+
+==== Bugfixes
+
+*Affecting all Beats*
+
+- Explicitly detect missing variables in autodiscover configuration, log them at the debug level. {issue}20568[20568] {pull}20898[20898]
+- Fix `libbeat.output.write.bytes` and `libbeat.output.read.bytes` metrics of the Elasticsearch output. {issue}20752[20752] {pull}21197[21197]
+
+*Filebeat*
+
+- Provide backwards compatibility for the `set` processor when Elasticsearch is less than 7.9.0. {pull}20908[20908]
+- Fix an error updating file size being logged when EOF is reached. {pull}21048[21048]
+- Fix error when processing AWS Cloudtrail Digest logs. {pull}21086[21086] {issue}20943[20943]
+
+*Metricbeat*
+
+- The Kibana collector applies backoff when errored at getting usage stats {pull}20772[20772]
+- The `elasticsearch/index` metricset only requests wildcard expansion for hidden indices if the monitored Elasticsearch cluster supports it. {pull}20938[20938]
+- Fix panic index out of range error when getting AWS account name. {pull}21101[21101] {issue}21095[21095]
+- Handle missing counters in the application_pool metricset. {pull}21071[21071]
+
+*Functionbeat*
+
+- Do not need Google credentials if not required for the operation. {issue}17329[17329] {pull}21072[21072]
+- Fix dependency issues of GCP functions. {issue}20830[20830] {pull}21070[21070]
+
+==== Added
+
+*Affecting all Beats*
+
+- Add container ECS fields in kubernetes metadata. {pull}20984[20984]
+
 [[release-notes-7.9.1]]
 === Beats version 7.9.1
 https://github.com/elastic/beats/compare/v7.9.0...v7.9.1[View commits]

CHANGELOG.next.asciidoc

@@ -12,15 +12,13 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 
 - Update to Golang 1.12.1. {pull}11330[11330]
 - Disable Alibaba Cloud and Tencent Cloud metadata providers by default. {pull}13812[12812]
-- Autodiscover doesn't generate any configuration when a variable is missing. Previously it generated an incomplete configuration. {pull}20898[20898]
 
 *Auditbeat*
 
 
 *Filebeat*
 
 - Fix parsing of Elasticsearch node name by `elasticsearch/slowlog` fileset. {pull}14547[14547]
-- Add support for GMT timezone offsets in `decode_cef`. {pull}20993[20993]
 
 *Heartbeat*
 
@@ -52,8 +50,6 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fix `setup.dashboards.index` setting not working. {pull}17749[17749]
 - Fix Elasticsearch license endpoint URL referenced in error message. {issue}17880[17880] {pull}18030[18030]
 - Change `decode_json_fields` processor, to merge parsed json objects with existing objects in the event instead of fully replacing them. {pull}17958[17958]
-- Explicitly detect missing variables in autodiscover configuration, log them at the debug level. {issue}20568[20568] {pull}20898[20898]
-- Fix `libbeat.output.write.bytes` and `libbeat.output.read.bytes` metrics of the Elasticsearch output. {issue}20752[20752] {pull}21197[21197]
 
 *Auditbeat*
 
@@ -73,9 +69,6 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fixed `cloudfoundry.access` to have the correct `cloudfoundry.app.id` contents. {pull}17847[17847]
 - Fixing `ingress_controller.` fields to be of type keyword instead of text. {issue}17834[17834]
 - Fixed typo in log message. {pull}17897[17897]
-- Provide backwards compatibility for the `set` processor when Elasticsearch is less than 7.9.0. {pull}20908[20908]
-- Fix an error updating file size being logged when EOF is reached. {pull}21048[21048]
-- Fix error when processing AWS Cloudtrail Digest logs. {pull}21086[21086] {issue}20943[20943]
 
 *Heartbeat*
 
@@ -102,10 +95,6 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fix storage metricset to allow config without region/zone. {issue}17623[17623] {pull}17624[17624]
 - Fix overflow on Prometheus rates when new buckets are added on the go. {pull}17753[17753]
 - Add a switch to the driver definition on SQL module to use pretty names {pull}17378[17378]
-- The Kibana collector applies backoff when errored at getting usage stats {pull}20772[20772]
-- The `elasticsearch/index` metricset only requests wildcard expansion for hidden indices if the monitored Elasticsearch cluster supports it. {pull}20938[20938]
-- Fix panic index out of range error when getting AWS account name. {pull}21101[21101] {issue}21095[21095]
-- Handle missing counters in the application_pool metricset. {pull}21071[21071]
 
 *Packetbeat*
 
@@ -115,8 +104,6 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 
 *Functionbeat*
 
-- Do not need Google credentials if not required for the operation. {issue}17329[17329] {pull}21072[21072]
-- Fix dependency issues of GCP functions. {issue}20830[20830] {pull}21070[21070]
 
 ==== Added
 
@@ -128,7 +115,6 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Update documentation for system.process.memory fields to include clarification on Windows os's. {pull}17268[17268]
 - When using the `decode_json_fields` processor, decoded fields are now deep-merged into existing event. {pull}17958[17958]
 - Add keystore support for autodiscover static configurations. {pull]16306[16306]
-- Add container ECS fields in kubernetes metadata. {pull}20984[20984]
 
 *Auditbeat*