(chore) rename class for clarity

Author: johnrengelman

instrumentation/ratpack/ratpack-1.7/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/ratpack/v1_7/RatpackForkedHttpClientTest.java

@@ -24,6 +24,6 @@ protected boolean useNettyClientAttributes() {
   @Override
   protected void configure(HttpClientTestOptions.Builder optionsBuilder) {
     super.configure(optionsBuilder);
-    optionsBuilder.setClientSpanErrorMapper(RatpackTestSingletons::ratpackClientSpanErrorMapper);
+    optionsBuilder.setClientSpanErrorMapper(RatpackTestUtils::ratpackClientSpanErrorMapper);
   }
 }

instrumentation/ratpack/ratpack-1.7/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/ratpack/v1_7/RatpackHttpClientTest.java

@@ -24,6 +24,6 @@ protected boolean useNettyClientAttributes() {
   @Override
   protected void configure(HttpClientTestOptions.Builder optionsBuilder) {
     super.configure(optionsBuilder);
-    optionsBuilder.setClientSpanErrorMapper(RatpackTestSingletons::ratpackClientSpanErrorMapper);
+    optionsBuilder.setClientSpanErrorMapper(RatpackTestUtils::ratpackClientSpanErrorMapper);
   }
 }

instrumentation/ratpack/ratpack-1.7/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/ratpack/v1_7/RatpackPooledHttpClientTest.java

@@ -24,6 +24,6 @@ protected boolean useNettyClientAttributes() {
   @Override
   protected void configure(HttpClientTestOptions.Builder optionsBuilder) {
     super.configure(optionsBuilder);
-    optionsBuilder.setClientSpanErrorMapper(RatpackTestSingletons::ratpackClientSpanErrorMapper);
+    optionsBuilder.setClientSpanErrorMapper(RatpackTestUtils::ratpackClientSpanErrorMapper);
   }
 }

instrumentation/ratpack/ratpack-1.7/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/ratpack/v1_7/RatpackTestSingletons.java renamed to instrumentation/ratpack/ratpack-1.7/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/ratpack/v1_7/RatpackTestUtils.java

@@ -10,9 +10,9 @@
 import org.junit.jupiter.api.condition.OS;
 import ratpack.http.client.HttpClientReadTimeoutException;
 
-public final class RatpackTestSingletons {
+public final class RatpackTestUtils {
 
-  private RatpackTestSingletons() {}
+  private RatpackTestUtils() {}
 
   public static Throwable ratpackClientSpanErrorMapper(URI uri, Throwable exception) {
     if (uri.toString().equals("https://192.0.2.1/")