done with:

     npm install
     git ls-files | grep -v '\/unstable\/' | xargs ./node_modules/.bin/eclint fix
     git ls-files | grep buildout.hash.cfg | xargs ./update-hash

  This commit is a clean up, it don't change anything for the final behaviour.

 Bang on every update is not reliable.

 Now the script on cron contacts re6st registry to collect informations and
 the script itself parameters of the slaves. This will reduce the load in
 and speed up the update of the slave on slapos master.

  * Follow up methods changes on re6stnet registry API.
  * getIPv4Information was simplifed on registry, so reimplement it.
  * Remove scripts generated and keep a single script to orchestate the token management.
  * Drop some code duplication
  * Remove babeld, openvpn and miniupnp as they are not required.
  * Remove useless scripts.
  * Remove re6stnet section, extra-eggs is more them enough and prevent duplications.

 Dump on filesytem the ipv4 used to the node create connections