RFR of JDK-8210802,temp files left by tests in jdk/java/net/httpclient

[Hamlin Li]

Would you please review the following patch?

bug: https://bugs.openjdk.java.net/browse/JDK-8210802
webrev: http://cr.openjdk.java.net/~mli/8210802/webrev.00/

Thank you
-Hamlin