in src/main/java/com/amazon/jenkins/ec2fleet/EC2Api.java [148:158]
public AmazonEC2 connect(final String awsCredentialsId, final String regionName, final String endpoint) {
final AmazonWebServicesCredentials credentials = AWSCredentialsHelper.getCredentials(awsCredentialsId, Jenkins.getInstance());
final AmazonEC2Client client =
credentials != null ?
new AmazonEC2Client(credentials) :
new AmazonEC2Client();
final String effectiveEndpoint = getEndpoint(regionName, endpoint);
if (effectiveEndpoint != null) client.setEndpoint(effectiveEndpoint);
return client;
}