Fix IllegalArgumentException in AmazonS3

JGit hit IllegalArgumentException: invalid content length
when pushing large packs to S3.

Bug: 463015
Change-Id: Iddf50d90c7e3ccb15b9ff71233338c6b204b3648
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java

@@ -489,16 +489,14 @@ public class AmazonS3 {
 
 		final String md5str = Base64.encodeBytes(csum);
 		final long len = buf.length();
-		final String lenstr = String.valueOf(len);
 		for (int curAttempt = 0; curAttempt < maxAttempts; curAttempt++) {
 			final HttpURLConnection c = open("PUT", bucket, key); //$NON-NLS-1$
-			c.setRequestProperty("Content-Length", lenstr); //$NON-NLS-1$
+			c.setFixedLengthStreamingMode(len);
 			c.setRequestProperty("Content-MD5", md5str); //$NON-NLS-1$
 			c.setRequestProperty(X_AMZ_ACL, acl);
 			encryption.request(c, X_AMZ_META);
 			authorize(c);
 			c.setDoOutput(true);
-			c.setFixedLengthStreamingMode((int) len);
 			monitor.beginTask(monitorTask, (int) (len / 1024));
 			final OutputStream os = c.getOutputStream();
 			try {