Make health metrics GA (#3802)

* Make health metrics GA

* Make health metrics GA - changelog

Author: jackshirazi

CHANGELOG.asciidoc

@@ -39,6 +39,7 @@ Use subheadings with the "=====" level for adding notes for unreleased changes:
 [float]
 ===== Features
 * Added experimental option to capture HTTP client request bodies for Apache Http Client v4 and v5, HttpUrlConnection and Spring WebClient - {pull}3776[#3776], {pull}3962[#3962], {pull}3724[#3724], {pull}3754[#3754], {pull}3767[#3767]
+* Agent health metrics now GA - {pull}3802[#3802]
 
 [[release-notes-1.x]]
 === Java Agent version 1.x

apm-agent-core/src/main/java/co/elastic/apm/agent/configuration/MetricsConfigurationImpl.java

@@ -93,15 +93,15 @@ public void assertValid(List<Double> buckets) {
         .key("agent_reporter_health_metrics")
         .configurationCategory(METRICS_CATEGORY)
         .description("Enables metrics which capture the health state of the agent's event reporting mechanism.")
-        .tags("added[1.35.0]", "experimental")
+        .tags("added[1.35.0]")
         .dynamic(false)
         .buildWithDefault(false);
 
     private final ConfigurationOption<Boolean> overheadMetricsEnabled = ConfigurationOption.booleanOption()
         .key("agent_background_overhead_metrics")
         .configurationCategory(METRICS_CATEGORY)
         .description("Enables metrics which capture the resource consumption of agent background tasks.")
-        .tags("added[1.35.0]", "experimental")
+        .tags("added[1.35.0]")
         .dynamic(false)
         .buildWithDefault(false);
 

docs/configuration.asciidoc

@@ -2653,9 +2653,7 @@ But if you must, you can use this option to increase the limit.
 // This file is auto generated. Please make your changes in *Configuration.java (for example CoreConfiguration.java) and execute ConfigurationExporter
 [float]
 [[config-agent-reporter-health-metrics]]
-==== `agent_reporter_health_metrics` (added[1.35.0] experimental)
-
-NOTE: This feature is currently experimental, which means it is disabled by default and it is not guaranteed to be backwards compatible in future releases.
+==== `agent_reporter_health_metrics` (added[1.35.0])
 
 Enables metrics which capture the health state of the agent's event reporting mechanism.
 
@@ -2678,9 +2676,7 @@ Enables metrics which capture the health state of the agent's event reporting me
 // This file is auto generated. Please make your changes in *Configuration.java (for example CoreConfiguration.java) and execute ConfigurationExporter
 [float]
 [[config-agent-background-overhead-metrics]]
-==== `agent_background_overhead_metrics` (added[1.35.0] experimental)
-
-NOTE: This feature is currently experimental, which means it is disabled by default and it is not guaranteed to be backwards compatible in future releases.
+==== `agent_background_overhead_metrics` (added[1.35.0])
 
 Enables metrics which capture the resource consumption of agent background tasks.
 

docs/metrics.asciidoc

@@ -663,8 +663,6 @@ Fields:
 [[metrics-agenthealth]]
 === Agent Health Metrics
 
-experimental::[]
-
 The agent internally uses a queue to buffer the various events (e.g. transactions, spans, metrics) before sending them to the APM server.
 When <<config-agent-reporter-health-metrics, `agent_reporter_health_metrics`>> is enabled, the agent will expose several metrics regarding the health state of this queue and the network connectivity to the APM server.
 In addition, if <<config-agent-background-overhead-metrics, `agent_background_overhead_metrics`>> is enabled, the agent will continuously measure the resource consumption of its own background tasks and provide the results as metrics.