Migrate 10 tests to JUnit 5 using CloseTestWindowsExtension#3612

vogella wants to merge 2 commits intoeclipse-platform:mastereclipse-platform/eclipse.platform.ui:masterfrom

vogella:migrate-closetestwindows-junit5-part2vogella/eclipse.platform.ui:migrate-closetestwindows-junit5-part2Copy head branch name to clipboard