findbugs: clone does not call super clone method

findbugs reason:
CN: clone method does not call super.clone() (CN_IDIOM_NO_SUPER_CALL)

Signed-off-by: Shahar Havivi <shavivi@redhat.com>
Change-Id: Idfe05e69c8cde480c4cba93a1ce185691d9d9316