git: openjdk/jdk: 8286045: Use ForceGC for cleaner test cases

[Xue-Lei Andrew Fan]

Changeset: 7eb15593
Author:    Xue-Lei Andrew Fan <xuelei at openjdk.org>
Date:      2022-05-26 17:59:28 +0000
URL:       https://git.openjdk.java.net/jdk/commit/7eb15593e18a923bbc18c8d596cff87d87019640

8286045: Use ForceGC for cleaner test cases

Reviewed-by: rriggs

! test/jdk/javax/security/auth/callback/PasswordCallback/CheckCleanerBound.java
! test/jdk/sun/security/jgss/GssContextCleanup.java
! test/jdk/sun/security/jgss/GssNameCleanup.java