Relax permissions for ZK install_dir
Relax permissions for ZK install_dir

Fixes #140

SimpleFinance/chef-zookeeper,jeffxor/chef-zookeeper,criteo-forks/chef-zookeeper,jeffxor/chef-zookeeper,evertrue/zookeeper-cookbook,mcoffin/chef-zookeeper,evertrue/zookeeper-cookbook,mcoffin/chef-zookeeper,jeffxor/chef-zookeeper,petere/chef-zookeeper,petere/chef-zookeeper,SimpleFinance/chef-zookeeper,petere/chef-zookeeper,mcoffin/chef-zookeeper,GannettDigital/chef-zookeeper,SimpleFinance/chef-zookeeper,evertrue/zookeeper-cookbook