Add organization details to pom.xml.
Move Asciidoc and Assembly Maven build plugins from pom.xml to spring-data-geode-distribution/pom.xml.
Move Asciidoc from spring-data-geode/src/main/asciidoc to src/main/asciidoc.
Create spring-data-gemfire module.
Create spring-data-geode module.
Modularize the SDG project and convert pom.xml into a parent POM.
Move all source files to spring-data-geode/src.
We now don't include the namespace schema files into the reference documentation anymore as they span multiple pages in the PDF and thus cause heavy load in the PDF conversion trying to lay those out properly [0]. Switched to a simple link pointing to the schemas for now.
[0] https://twitter.com/olivergierke/status/935818047385948160
Introduced Maven pom.xml basically mimicking what's been previously defined in build.gradle. Moved Asciidoctor files into places expected by the Spring Data build parent. Moved notice.txt etc. to src/main/resources. Switched to Logback for test logging.
(cherry picked from commit 4a6adbadb69dd219435b4947ee89dca925b56e48)
Signed-off-by: John Blum <jblum@pivotal.io>
