Fix handling a port number in URI

Properly handle a URI with port number.
The constructor that takes the authority needs one more argument.

src/main/java/org/janelia/saalfeldlab/n5/s3/AmazonS3Utils.java

@@ -126,7 +126,7 @@ public static AmazonS3 createS3(final String uri, @Nullable final String s3Endpo
 			// if AmazonS3URI does not like the form of the uri
 			try {
 				final URI asURI = new URI(uri);
-				final URI endpointUri = new URI(asURI.getScheme(), asURI.getAuthority(), null, null);
+				final URI endpointUri = new URI(asURI.getScheme(), asURI.getAuthority(), null, null, null);
 				return createS3(AmazonS3Utils.getS3Bucket(uri), s3Credentials, new AwsClientBuilder.EndpointConfiguration(endpointUri.toString(), null), null);
 			} catch (final URISyntaxException e1) {
 				throw new N5Exception("Could not create s3 client from uri: " + uri, e1);