Checkstyle maven plugin check - openflowjava

    -violations do not fail build
    -rules defined in yangtools/common/checkstyle-logging
	https://git.opendaylight.org/gerrit/#/c/7595/
	https://git.opendaylight.org/gerrit/#/c/7108/

Change-Id: Ibf4e7c9dd0bbcc8a26e60a0cead7d2865c32e44d
Signed-off-by: Milos Fabian <milfabia@cisco.com>