[8u] RFR: 8238579: HttpsURLConnection drops the timeout and hangs forever in read

[Alexey Bakhtin]

Hi, Please review the backport of JDK-8238579 to 8u:

Bug: https://bugs.openjdk.java.net/browse/JDK-8238579
Webrev: http://cr.openjdk.java.net/~abakhtin/8238579/webrev.v0/

Original patch applies clean, except for copyright header and source file location.
Relevant regression tests are passed.

Regards
Alexey