jio: update md5sum of instance.cfg.in

(cherry picked from commit ea3bc60070a8868e7266e504c030524e19a72d51)
jio: revert "Follow naming convention"

This revert e7083872ad. This change must be applied
only when we will have newer version of slapos.cookbook
Add pyOpenSSL component
simplify and improve varnish configuration.
version up : curl 7.31.0, including security fixes.
set default_ttl=0 in varnishd

so that responses without max-age will not be cached.
cleanup varnish configuration.
version up : groonga-3.0.5, groonga-normalizer-mysql-1.0.5 and mroonga-3.05.
version up : gzip 1.6.
add newline at the end of logrotate conf file.
add logrotate entry for web-checker.
Merge branch 'erp5-component' into erp5