This commit modularizes spring-boot-test-autoconfigure. It now
contains only the code that's central to test auto-configuration.
Feature-specific functionality has moved out into -test modules,
some existing and some newly created. For example, `@DataJpaTest` can
now be found in spring-boot-data-jpa-test.
Closes gh-47322
This commit adds a spring-boot-persistence module with data technology
independent features. This provides a better home for EntityScan and
PersistenceExceptionTranslationAutoConfiguration.
Closes gh-45328
Andy Wilkinson
Stéphane Nicoll
Moritz Halbritter
Phillip Webb