Move o.e.core.tests.net BREE to Java 11. Change-Id: Ia53dbc7a2de6c14344a72d899cdcf8610b67ac09 Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.team/+/179795 Tested-by: Platform Bot <platform-bot@eclipse.org> Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>