This is a follow-on from the work done in 5009933. Now that SPR-14015
has been fixed, constructor injection can also be used for parameterised
dependencies, including optional dependencies that are injected via
an ObjectProvider.
Closes gh-5306
Support loading a `.spring-boot-devtools.properties` file from the
users home folder. The property file can be used to customize settings
that make sense on a per-user basis, but might not want to be checked
into the project.
Fixes gh-3151