* Separate and isolate new REST API 2 tests into 't/api-rest2'.
* Create initial Dockerfile to run new api-rest2 tests on Jenkins.
* Store test results into '/results' folder to be Docker/Jenkins compatible.
* Simplify the Perl classes naming.
* Make Perl critic happy: Magic variable "$ENV" should be assigned as "local"
Change-Id: I72f62a959ea7dce91b8f7b565bba5969e51f5259