RFR: 8058514: TEST_BUG: New tests introduced in 8058429 are TimeZone dependent

[Claes Redestad]

Hi,

please review this simple fix which ensures 
java.sql.test.sql.TimestampsTests can be run successfully across the 
globe. Also use a custom timezone ("GMT+01") to make sure the test does 
not observe DST, which will keep the test running happily all year round.

webrev: http://cr.openjdk.java.net/~redestad/8058514/webrev.01/
bug: https://bugs.openjdk.java.net/browse/JDK-8058514

Thanks!

/Claes