Fix deprecation warning

Author: trask

aws-resources/src/test/java/io/opentelemetry/contrib/aws/resource/DockerHelperTest.java

@@ -5,9 +5,9 @@
 
 package io.opentelemetry.contrib.aws.resource;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.assertj.core.api.Assertions.assertThat;
 
-import com.google.common.base.Charsets;
 import com.google.common.io.Files;
 import java.io.File;
 import java.io.IOException;
@@ -26,7 +26,7 @@ void testCgroupFileMissing() {
   void testContainerIdMissing(@TempDir File tempFolder) throws IOException {
     File file = new File(tempFolder, "no_container_id");
     String content = "13:pids:/\n" + "12:hugetlb:/\n" + "11:net_prio:/";
-    Files.write(content.getBytes(Charsets.UTF_8), file);
+    Files.write(content.getBytes(UTF_8), file);
 
     DockerHelper dockerHelper = new DockerHelper(file.getPath());
     assertThat(dockerHelper.getContainerId()).isEmpty();
@@ -37,7 +37,7 @@ void testGetContainerId(@TempDir File tempFolder) throws IOException {
     File file = new File(tempFolder, "cgroup");
     String expected = "386a1920640799b5bf5a39bd94e489e5159a88677d96ca822ce7c433ff350163";
     String content = "dummy\n11:devices:/ecs/bbc36dd0-5ee0-4007-ba96-c590e0b278d2/" + expected;
-    Files.write(content.getBytes(Charsets.UTF_8), file);
+    Files.write(content.getBytes(UTF_8), file);
 
     DockerHelper dockerHelper = new DockerHelper(file.getPath());
     assertThat(dockerHelper.getContainerId()).isEqualTo(expected);

aws-resources/src/test/java/io/opentelemetry/contrib/aws/resource/EksResourceTest.java

@@ -13,11 +13,11 @@
 import static io.opentelemetry.semconv.incubating.CloudIncubatingAttributes.CLOUD_PROVIDER;
 import static io.opentelemetry.semconv.incubating.ContainerIncubatingAttributes.CONTAINER_ID;
 import static io.opentelemetry.semconv.incubating.K8sIncubatingAttributes.K8S_CLUSTER_NAME;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.assertj.core.api.Assertions.entry;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 
-import com.google.common.base.Charsets;
 import com.google.common.io.Files;
 import io.opentelemetry.api.common.Attributes;
 import io.opentelemetry.sdk.autoconfigure.spi.ResourceProvider;
@@ -44,10 +44,10 @@ public class EksResourceTest {
   void testEks(@TempDir File tempFolder) throws IOException {
     File mockK8sTokenFile = new File(tempFolder, "k8sToken");
     String token = "token123";
-    Files.write(token.getBytes(Charsets.UTF_8), mockK8sTokenFile);
+    Files.write(token.getBytes(UTF_8), mockK8sTokenFile);
     File mockK8sKeystoreFile = new File(tempFolder, "k8sCert");
     String truststore = "truststore123";
-    Files.write(truststore.getBytes(Charsets.UTF_8), mockK8sKeystoreFile);
+    Files.write(truststore.getBytes(UTF_8), mockK8sKeystoreFile);
 
     when(httpClient.fetchString(any(), Mockito.eq(K8S_SVC_URL + AUTH_CONFIGMAP_PATH), any(), any()))
         .thenReturn("not empty");