hg: code-tools/jtreg: add test to confirm system properties available in driver

[jonathan.gibbons at oracle.com]

Changeset: 7740b27ddd14
Author:    jjg
Date:      2018-02-13 15:39 -0800
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/7740b27ddd14

add test to confirm system properties available in driver

! src/share/classes/com/sun/javatest/regtest/exec/DriverAction.java
+ test/sysprops/SysPropsTest.gmk
+ test/sysprops/TEST.ROOT
+ test/sysprops/Test.java