git: openjdk/jdk15u-dev: 8256066: Tests use deprecated TestNG API that is no longer available in new versions

[Yuri Nesterenko]

Changeset: dd560a53
Author:    Yuri Nesterenko <yan at openjdk.org>
Date:      2021-12-09 08:25:48 +0000
URL:       https://git.openjdk.java.net/jdk15u-dev/commit/dd560a530e8eaee4a634afad9e1e43357cc7c1f6

8256066: Tests use deprecated TestNG API that is no longer available in new versions

Backport-of: 6d8acd2696f41918d4233ddffe46e6c205f9dbc3

! test/jdk/java/lang/invoke/ConstantIdentityMHTest.java
! test/jdk/java/lang/invoke/DropArgumentsTest.java
! test/jdk/java/lang/invoke/VarArgsTest.java