Update changelogs for 8.10 release (#11419)

CHANGELOG.asciidoc

@@ -1,4 +1,5 @@
 include::./changelogs/head.asciidoc[]
+include::./changelogs/8.10.asciidoc[]
 include::./changelogs/8.9.asciidoc[]
 include::./changelogs/8.8.asciidoc[]
 include::./changelogs/8.7.asciidoc[]

changelogs/8.10.asciidoc

@@ -0,0 +1,39 @@
+[[release-notes-8.10]]
+== APM version 8.10
+
+https://github.com/elastic/apm-server/compare/8.10\...main[View commits]
+
+* <<release-notes-8.10.0>>
+
+[float]
+[[release-notes-8.10.0]]
+=== APM version 8.10.0
+
+[float]
+==== Breaking Changes
+- Aggregated metrics now consider global labels to be part of a service's identity, and high cardinality global labels may cause services to be obscured {pull}11386[11386]
+- Event protobuf encoding for tail-based sampling changed (to a more efficient encoding) for event timestamp and duration {pull}11386[11386]
+
+[float]
+==== Deprecations
+
+[float]
+==== Bug fixes
+
+[float]
+==== Intake API Changes
+- `null` is no longer an acceptable value for `context.http.request.headers` and `context.http.response.headers` {pull}11386[11386]
+
+[float]
+==== Added
+- Add a self-instrumentation transaction to the source map periodic refresh action. {pull}11116[11116]
+- Add a self-instrumentation transaction to the agent config periodic refresh action. {pull}11129[11129]
+- Stop dropping metadata fields from span documents. {pull}11089[11089]
+- Add permissions to reroute events in the integration package. {pull}11168[11168]
+
+[float]
+==== Aggregation changes and improvements
+- Replace aggregation with LSM-based aggregator which has a lower memory footprint {pull}11117[11117]
+- Add `service.language.name` to service destination metrics {pull}11117[11117]
+- Modify per-service transaction groups limit to consider more than service.name; Add per-service service destination groups limit and per-service service transaction groups limit {pull}11117[11117]
+- All aggregations share the MaxServices limit {pull}11117[11117]

changelogs/head.asciidoc

@@ -1,12 +1,10 @@
 [[release-notes-head]]
 == APM version HEAD
 
-https://github.com/elastic/apm-server/compare/8.9\...main[View commits]
+https://github.com/elastic/apm-server/compare/8.10\...main[View commits]
 
 [float]
 ==== Breaking Changes
-- Aggregated metrics now consider global labels to be part of a service's identity, and high cardinality global labels may cause services to be obscured {pull}11386[11386]
-- Event protobuf encoding for tail-based sampling changed (to a more efficient encoding) for event timestamp and duration {pull}11386[11386]
 
 [float]
 ==== Deprecations
@@ -16,18 +14,6 @@ https://github.com/elastic/apm-server/compare/8.9\...main[View commits]
 
 [float]
 ==== Intake API Changes
-- `null` is no longer an acceptable value for `context.http.request.headers` and `context.http.response.headers` {pull}11386[11386]
 
 [float]
 ==== Added
-- Add a self-instrumentation transaction to the source map periodic refresh action. {pull}11116[11116]
-- Add a self-instrumentation transaction to the agent config periodic refresh action. {pull}11129[11129]
-- Stop dropping metadata fields from span documents. {pull}11089[11089]
-- Add permissions to reroute events in the integration package. {pull}11168[11168]
-
-[float]
-==== Aggregation changes and improvements
-- Replace aggregation with LSM-based aggregator which has a lower memory footprint {pull}11117[11117]
-- Add `service.language.name` to service destination metrics {pull}11117[11117]
-- Modify per-service transaction groups limit to consider more than service.name; Add per-service service destination groups limit and per-service service transaction groups limit {pull}11117[11117]
-- All aggregations share the MaxServices limit {pull}11117[11117]

docs/release-notes.asciidoc

@@ -9,6 +9,7 @@ This section summarizes the changes in each release.
 
 **APM integration and APM Server**
 
+* <<release-notes-8.10>>
 * <<release-notes-8.9>>
 * <<release-notes-8.8>>
 * <<release-notes-8.7>>