Bump minimum snap-server version to 1.0
Bump minimum snap-server version to 1.0

The changes to support snap-server 1.0 are backward-incompatible. Since
snap-server 1.x has been around long enough, there's no point supporting
0.9.x anymore.

Signed-off-by: Apollon Oikonomopoulos <ed81ed0a45ccd5c8869bda52e38353a6299ee39e@debian.org>

ganeti/ganeti,mbakke/ganeti,mbakke/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti/ganeti