hg: jdk/sandbox: Merge from default

[erik.joelsson at oracle.com]

Changeset: de6373676c08
Author:    erikj
Date:      2018-10-15 09:18 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/de6373676c08

Merge from default

- test/jdk/lib/testlibrary/ModuleTargetHelper.java
- test/jdk/lib/testlibrary/ModuleUtils.java
- test/jdk/lib/testlibrary/jdk/testlibrary/SimpleSSLContext.java
- test/jdk/lib/testlibrary/jdk/testlibrary/testkeys