RFR[9] JDK-8170641: sun/net/www/protocol/https/HttpsURLConnection/PostThruProxy.sh fails with timeout

[John Jiang]

Hi,
sun/net/www/protocol/https/HttpsURLConnection/PostThruProxy.sh failed 
with timeout.
The client side could hang if the server goes to timeout before getting 
the client request, and the proxy also could be blocked.

This patch sets timeout for the server and the client and catches 
SocketTimeoutException to ignore the . And it removes the usage on shell 
script.
The patch also modifies test 
sun/net/www/protocol/https/HttpsURLConnection/PostThruProxyWithAuth.sh 
as this test has the similar code pattern and issue.

Webrev: http://cr.openjdk.java.net/~jjiang/8170641/webrev.00/
Issue: https://bugs.openjdk.java.net/browse/JDK-8170641

Best regards,
John Jiang