Add missing configuration metadata for graphql metrics

Author: bclozel

graphql-spring-boot-starter/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -3,6 +3,20 @@
     {
       "name": "spring.graphql.locations",
       "defaultValue": "classpath:graphql/"
+    },
+    {
+      "name": "management.metrics.graphql.autotime.enabled",
+      "description": "Whether to automatically time graphql requests.",
+      "defaultValue": true
+    },
+    {
+      "name": "management.metrics.graphql.autotime.percentiles",
+      "description": "Computed non-aggregable percentiles to publish."
+    },
+    {
+      "name": "management.metrics.graphql.autotime.percentiles-histogram",
+      "description": "Whether percentile histograms should be published.",
+      "defaultValue": false
     }
   ]
 }

spring-graphql-docs/src/docs/asciidoc/index.adoc

@@ -263,7 +263,15 @@ spring.graphql.graphiql.path=/graphiql
 === Metrics
 
 When the starter `spring-boot-starter-actuator` is present on the classpath, metrics for
-GraphQL requests are collected. You can configure metrics collection as follows:
+GraphQL requests are collected. You can disable metrics collection as follows:
+
+[source,properties,indent=0,subs="verbatim,quotes"]
+----
+management.metrics.graphql.autotime.enabled=false
+----
+
+Metrics can be exposed with an Actuator web endpoint.
+The following sections assume that its exposure is enabled in your application configuration, as follows:
 
 [source,properties,indent=0,subs="verbatim,quotes"]
 ----