Update `AbstractApplicationContextRunner` and `Configurations` to
allow registration of beans with a specific generated bean name. By
default, no name is generated, however, `AutoConfigurations` has been
updated to use bean names using the fully qualified class name.
The update brings `ApplicationContextRunners` closer the behavior of
a standard Spring Boot application where user `@Configuration` classes
are usually registered with a simple name and auto-configurations are
imported (via an `ImportSelector`) using a fully qualified name.
Fixes gh-17963
Co-authored-by: Stéphane Nicoll <stephane.nicoll@broadcom.com>
Co-authored-by: Andy Wilkinson <andy.wilkinson@broadcom.com>
Co-authored-by: Dmytro Nosan <dimanosan@gmail.com>