core: Add no-argument constructor check

This patch adds NoArgConstructorCheck to ensure all classes in backend
common module have no-argument constructor (with any access modifier),
unless excluded via checkstyle-suppressions.xml file.

Added public no-argument constructor to all Parameters classes. Added
classes unrelated to GWT RPC mechanism (and therefore irrelevant for
this check) into checkstyle-suppressions.xml file.

Change-Id: Ia4f9a00d6289374b433ed4419552420a3337da50
Bug-Url: https://bugzilla.redhat.com/1029605
Signed-off-by: Vojtech Szocs <vszocs@redhat.com>