RFR: 8234964: failure_handler: gather more environment information on Windows, Solaris and Linux

[Julia Boes]

Hi,

In the case of test failure, the environment information of 'ifconfig 
-a' is already gathered on macOS systems.

The following enhancement allows the same information to be gathered on 
Linux, Solaris and Windows systems (in the latter case 'ipconfig /all').

Bug: https://bugs.openjdk.java.net/browse/JDK-8234964

Webrev: http://cr.openjdk.java.net/~jboes/webrevs/8234964/webrev.00/

Regards,

Julia