This reverts commit b598acb4

/reviewed-on !76

/reviewed-on nexedi/slapos.package!75

/reviewed-on nexedi/slapos.package!74

/reviewed-on !72

/reviewed-on nexedi/slapos.package!73

/reviewed-on nexedi/slapos.package!71

/reviewed-on nexedi/slapos.package!70

It is useful to bootstrap local development of SlapOS related works, which
shall not used SlapOS Master (eg. a lot of isntances)

/reviewed-on nexedi/slapos.package!69

This partially reverts commit dbc26026.

Despite of locally installing slapos.node in some cases, the repository is
required for other tasks (like installing re6st-node).

try to disable ipv6 default route configuration in servers when re6st is used.

/reviewed-on nexedi/slapos.package!62

/reviewed-on !68

I lost the old key so I regenerated a new one... (this time I'll keep a backup...)

/reviewed-on nexedi/slapos.package!67

Some servers failed to run upgrader because slapos.libnetworkcache was old and not compatible anymore. So playbook couldn't be downloaded.
We check if slapos.libnetworkcache and slapcache need to be upgraded before run upgrader role.

/reviewed-on nexedi/slapos.package!65

  On the KVM, we can be slowdown on a single process, however we can reach the maximum io speed
  if we have a good configuration.

/reviewed-on nexedi/slapos.package!64

This reverts commit 15b2692c.
This change was committed directly on slapos.git: nexedi/slapos@1f46a963