[vector] RFR 8222933: Test failures after api change in JDK-8222752

[Kharbas, Kishor]

Hi,
Small fix for test failures due to renaming of get() and getElement() to lane() in http://hg.openjdk.java.net/panama/dev/rev/82514a6254e6

Bug : https://bugs.openjdk.java.net/browse/JDK-8222933
Webrev : http://cr.openjdk.java.net/~kkharbas/vector-api/8222933/8222933.webrev.00/

Requesting review.

Thanks,
Kishor