HADOOP-19282. STSClientFactory: do not use URIBuilder

URIBuilder was used from the AWS SDK for Java v2, to be precise from the
shaded Apache HTTP Client. It is a problem if a user would like not to
use the AWS SDK bundle, since more or less only 3 modules are needed
(s3, s3-transfer & sts), but that may cause problems on unshaded
dependency versions. Since a URI constructor can achieve the same here I
switched it as a preferred option.

Author: LDVSOFT

hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/auth/STSClientFactory.java

@@ -23,7 +23,8 @@
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.concurrent.TimeUnit;
-
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
 import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration;
 import software.amazon.awssdk.core.retry.RetryPolicy;
@@ -35,19 +36,14 @@
 import software.amazon.awssdk.services.sts.model.AssumeRoleRequest;
 import software.amazon.awssdk.services.sts.model.Credentials;
 import software.amazon.awssdk.services.sts.model.GetSessionTokenRequest;
-import software.amazon.awssdk.thirdparty.org.apache.http.client.utils.URIBuilder;
-import org.apache.hadoop.fs.s3a.impl.AWSClientConfig;
-import org.apache.hadoop.util.Preconditions;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.s3a.Invoker;
 import org.apache.hadoop.fs.s3a.Retries;
+import org.apache.hadoop.fs.s3a.impl.AWSClientConfig;
+import org.apache.hadoop.util.Preconditions;
 
 import static org.apache.commons.lang3.StringUtils.isEmpty;
 import static org.apache.commons.lang3.StringUtils.isNotEmpty;
@@ -167,7 +163,7 @@ public static StsClientBuilder builder(final AwsCredentialsProvider credentials,
    */
   private static URI getSTSEndpoint(String endpoint) {
     try {
-      return new URIBuilder().setScheme("https").setHost(endpoint).build();
+      return new URI("https", endpoint, null, null);
     } catch (URISyntaxException e) {
       throw new IllegalArgumentException(e);
     }