Add web identity token file credentials provider to the default credentials chain.

.changes/next-release/feature-AWSSDKforJavav2-e89d942.json

@@ -0,0 +1,5 @@
+{
+    "category": "AWS SDK for Java v2", 
+    "type": "feature", 
+    "description": "Added the web identity credentials provider to the default credential chain"
+}

core/auth/src/main/java/software/amazon/awssdk/auth/credentials/DefaultCredentialsProvider.java

@@ -34,6 +34,7 @@
  * @see SystemPropertyCredentialsProvider
  * @see EnvironmentVariableCredentialsProvider
  * @see ProfileCredentialsProvider
+ * @see WebIdentityTokenFileCredentialsProvider
  * @see ContainerCredentialsProvider
  * @see InstanceProfileCredentialsProvider
  */
@@ -71,6 +72,7 @@ private static LazyAwsCredentialsProvider createChain(Builder builder) {
                     SystemPropertyCredentialsProvider.create(),
                     EnvironmentVariableCredentialsProvider.create(),
                     ProfileCredentialsProvider.create(),
+                    WebIdentityTokenFileCredentialsProvider.create(),
                     ContainerCredentialsProvider.builder()
                                                 .asyncCredentialUpdateEnabled(asyncCredentialUpdateEnabled)
                                                 .build(),

core/auth/src/main/java/software/amazon/awssdk/auth/credentials/WebIdentityTokenFileCredentialsProvider.java

@@ -156,7 +156,7 @@ public Builder webIdentityTokenFile(Path webIdentityTokenFile) {
             return this;
         }
 
-        public void setwebIdentityTokenFile(Path webIdentityTokenFile) {
+        public void setWebIdentityTokenFile(Path webIdentityTokenFile) {
             webIdentityTokenFile(webIdentityTokenFile);
         }