[verona.stage] RFR 8134365: Test test/sun/misc/Version/Version.java should follow Verona rules for trailing zeros

Please review this change: Bug: https://bugs.openjdk.java.net/browse/JDK-8134365 Webrev: http://cr.openjdk.java.net/~amurillo/9/8134365/ This change modifies the toString() method of: test/sun/misc/Version/Version.java so that it doesn't include trailing zeros when the some version fields are not defined. For example, if the version is 9-ea+b2, "toString()" should not return 9.0.0.0-ea+b2 note that this class will eventually be modified to use the Java API to parse, validate, and compare version strings once it is available. That's being tracked under: https://bugs.openjdk.java.net/browse/JDK-8136651 Thanks -- Alejandro