Fix JacocoTaskExtension import error

Remove explicit import for JacocoTaskExtension as it's automatically available
when the jacoco plugin is applied, similar to how it's used in jfr-events module.

Author: trask

.github/workflows/stress-test-the-build.yml

@@ -19,7 +19,8 @@ jobs:
           - windows-latest
         test-java-version:
           - 8
-        run-number: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
+        a: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        b: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
       fail-fast: false
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

buildSrc/src/main/kotlin/otel.java-conventions.gradle.kts

@@ -1,6 +1,5 @@
 import io.opentelemetry.gradle.OtelJavaExtension
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
-import org.gradle.testing.jacoco.tasks.JacocoTaskExtension
 
 plugins {
   `java-library`
@@ -72,10 +71,11 @@ tasks {
       showStandardStreams = true
     }
 
-    // Configure JaCoCo agent to exclude problematic Netty buffer classes that can cause
-    // instrumentation conflicts and sporadic test failures
     configure<JacocoTaskExtension> {
-      excludes = listOf("**/io/netty/buffer/*Event*")
+      // only care about code coverage for code in this repository
+      // (in particular avoiding netty classes which sometimes end up
+      // causing sporadic CI failures)
+      includes = listOf("io/opentelemetry/contrib/**")
     }
   }