AetherStack

@jamesfredley Thank you! I’ve rebased my changes onto the 7.0.x branch and force-pushed the updated branch. The PR now targets 7.0.x as requested.

- grails-test-core/build.gradle (modified) - grails-testing-support-core/build.gradle (modified) - The moved files in grails-testing-support-core/src/main/groovy/org/grails/test/ - grails-testing-support-core/src/main/resources/META-INF/services/org.spockframework.runtime.extension.IGlobalE xtension (modified) - The fixed Java file with the import change