Allow system properties to be configured in byteman-rule-check maven plugin

It would be convenient if the byteman-rule-check maven plugin supported setting of system properties to be installed during execution of the Byteman rule checker. This should be available as a configuration element with name systemProperties using the same syntax as used for other property specifications e.g.

  <configuration>
    . . .
    <systemProperties>
      <property>
        <name>org.jboss.byteman.transform.all</name>
        <value>true</value>
      </property>
      . . .