blivet_packagelist won't be defined on Oracle Enterprise Linux (OEL) as there are no appropriate variable files in vars/directory. Since OEL, from this role's perspective, isn't more than a relabeled RHEL, it's sufficient to symlink every vars/RedHat?.yml to the appropriate vars/OracleLinux_?.yml to add OEL support.
blivet_packagelist won't be defined on Oracle Enterprise Linux (OEL) as there are no appropriate variable files in vars/directory. Since OEL, from this role's perspective, isn't more than a relabeled RHEL, it's sufficient to symlink every vars/RedHat?.yml to the appropriate vars/OracleLinux_?.yml to add OEL support.