Export ZOO_LOG_DIR and ZOO_LOG4J_PROP
Export ZOO_LOG_DIR and ZOO_LOG4J_PROP

Solves issue of a SysV-style startup not passing these on to a subshell

SimpleFinance/chef-zookeeper,evertrue/zookeeper-cookbook,evertrue/zookeeper-cookbook,SimpleFinance/chef-zookeeper,SimpleFinance/chef-zookeeper,evertrue/zookeeper-cookbook,criteo-forks/chef-zookeeper