Fix sporadic CI failures (open-telemetry#2148)

Author: trask

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

@@ -76,6 +76,13 @@ tasks {
       exceptionFormat = TestExceptionFormat.FULL
       showStandardStreams = true
     }
+    
+    configure<JacocoTaskExtension> {
+      // 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/**")
+    }
   }
 
   withType<Javadoc>().configureEach {

consistent-sampling/build.gradle.kts

@@ -12,3 +12,14 @@ dependencies {
   testImplementation("org.hipparchus:hipparchus-core:4.0.1")
   testImplementation("org.hipparchus:hipparchus-stat:4.0.1")
 }
+
+tasks {
+  withType<Test>().configureEach {
+    develocity.testRetry {
+      // TODO (trask) fix flaky tests and remove this workaround
+      if (System.getenv().containsKey("CI")) {
+        maxRetries.set(5)
+      }
+    }
+  }
+}

jmx-scraper/build.gradle.kts

@@ -82,7 +82,7 @@ tasks {
     systemProperty("gradle.project.version", "${project.version}")
 
     develocity.testRetry {
-      // You can see tests that were retried by this mechanism in the collected test reports and build scans.
+      // TODO (trask) fix flaky tests and remove this workaround
       if (System.getenv().containsKey("CI")) {
         maxRetries.set(5)
       }