When deploying keys to a machine, upload ALL private keys from ALL
other machines (not just sync pair peers). Also populate known_hosts
with all other machine hosts. Creates a full mesh where any machine
can SSH to any other.
- sshmanager/deploy.go: change knownHostsHost string parameter to
knownHostsHosts []string for multi-host ssh-keyscan
- handlers_machines.go: replace sync-pair-based key detection with
loop over all machines, deduplicating by local key path
darroyo
f7801585a6