Source Override does not work for AWS Gov Cloud

[sfernandezf]

When try to use sourceLocationOverride with AWS Gov Cloud bucket the build fail with the message below.

com.amazonaws.services.s3.model.AmazonS3Exception: The specified bucket is not valid. (Service: Amazon S3; Status Code: 400; Error Code: InvalidBucketName; S3 Extended Request ID; Proxy: ), S3 Extended Request ID: 
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1879)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleServiceErrorResponse(AmazonHttpClient.java:1418)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1387)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1157)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:814)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:781)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:755)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:715)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:697)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:561)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:541)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5453)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5400)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:5394)
	at com.amazonaws.services.s3.AmazonS3Client.getBucketVersioningConfiguration(AmazonS3Client.java:2447)
	at com.amazonaws.services.s3.AmazonS3Client.getBucketVersioningConfiguration(AmazonS3Client.java:2431)
	at CodeBuilderValidation.checkBucketIsVersioned(CodeBuilderValidation.java:224)
	at CodeBuilder.perform(CodeBuilder.java:417)
	at CodeBuilder.perform(CodeBuilder.java:261)
	at CodeBuildStep$CodeBuildExecution.run(CodeBuildStep.java:650)
	at CodeBuildStep$CodeBuildExecution.run(CodeBuildStep.java:610)
	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47)
	at hudson.security.ACL.impersonate2(ACL.java:451)
	at hudson.security.ACL.impersonate(ACL.java:463)
	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)