JDK 9 RFR of JDK-8151904: test/java/lang/StackWalker/VerifyStackTrace.java needs to handle update releases

[Hamlin Li]

The test currently hardcodes the version number "9". We should build a 
JDK with a different release number e.g. 9.1 and checks if this test 
handles it properly.
Test run successfully on 9-ea+118, dummybundles(9-ea+255, 9.1-ea+255, 
9.0.1-ea+255, 9.0.0.1-ea+255).

bug: https://bugs.openjdk.java.net/browse/JDK-8151904
webrev: http://cr.openjdk.java.net/~mli/8151904/webrev.00/

Thank you
-Hamlin