You need to give permission to parent of /etc/packages/my_packages i.e. /etc/packages node also.
when you give permission to /etc/packages all the child node will be getting the permission also. Make sure you explicitly remove permission from all the child node except my_packages
You need to give permission to parent of /etc/packages/my_packages i.e. /etc/packages node also.
when you give permission to /etc/packages all the child node will be getting the permission also. Make sure you explicitly remove permission from all the child node except my_packages