solves ticket https://issues.jboss.org/browse/RAILO-2327

added two optional args to GetLocalHostIP():

GetLocalHostIP( boolean all=false, boolean refresh=false )

since the return type is now ANY instead of STRING, I can not keep the old signature in railo.runtime.functions.system.GetLocalHostIP

this functionality will be used in tickets like RAILO-1600 as well as tickets RAILO-2201 and RAILO-2322 via the admin