added UserKnownHostsfile to ssh config


Signed-off-by: tamil <tamil.muthamizhan@inktank.com>
schedule_suite.sh: put sha1 in install: overrides, not ceph:

Signed-off-by: Sage Weil <sage@inktank.com>
set permission for config file

Signed-off-by: tamil <tamil.muthamizhan@inktank.com>