Support of Lombok annotated ConfigurationProperties

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

spring-boot-docs/src/main/asciidoc/appendix-configuration-metadata.adoc

@@ -190,6 +190,10 @@ will be used to populate the `description` attribute.
 NOTE: You should only use simple text with `@ConfigurationProperties` field Javadoc since
 they are not processed before being added to the JSON.
 
+Properties are discovered via the presence of standard getters and setters with special
+handling for collection types (that will be detected even if only a getter is present). The
+annotation processor also supports the use of the `@Data`, `@Getter` and `@Setter` lombok
+annotations.
 
 
 [[configuration-metadata-nested-properties]]