tests: change min_size in to be different than what is in the config

Signed-off-by: Gregory Meno <gmeno@redhat.com>
Merge pull request #178 from ceph/wip-8967

tests: change min_size in to be different than what is in the config
calamari-ctl: relax perms on some salt dirs during initialization

Signed-off-by: Gregory Meno <gmeno@redhat.com>