[OPENENGSB-3069] removed the osgi version reference from the model description class
use labs-jpatest for jpa-tests

(cherry picked from commit 1f1f3b3e054b6ab10308b5f14731cfc3bef95933)

Signed-off-by: Andreas Pieber <anpieber@gmail.com>
[OPENENGSB-3502] Fixed checkstyle problems

Signed-off-by: Andreas Pieber <anpieber@gmail.com>