Previously, no configuration properties were discovered on a class using
lombok instead of regular getters/setters.
This commit adds a support for some of the lombok annotations,
specifically that is @Data, @Getter and @Setter. Provides the same
semantic as what lombok is generating.
Closes gh-2114
Add an appendix to the reference documentation describing the format
of configuration meta-data and how the annotation processor can be used.
Closes gh-1001
Stephane Nicoll
Phillip Webb