fix(iso): Asking for an SSH pub key is mandatory with SSH daemon (#21)

setup.sh

@@ -209,11 +209,9 @@ function setup_env_vars () {
             echo
         fi
 
-        if [[ "${want_custom_keepalive_intvl}" ]]; then
         read -u3 -p 'Please type SSH pub keys on one line separated by double-commas (,,) and confirm with <Enter>: ' ARCHZBM_SSH_AUTH_KEYS
         echo
     fi
-    fi
 
     for env_var in 'ARCHZBM_ZFSPROPS_NO_COMPRESSION' 'ARCHZBM_ZFSPROPS_NO_ENCRYPTION' 'ARCHZBM_ZPOOL_PASSWORD' 'ARCHZBM_ROOT_PASSWORD' 'ARCHZBM_NET_AUTOCONF' 'ARCHZBM_NET_DEVICE' 'ARCHZBM_NET_CLIENT_IP' 'ARCHZBM_NET_NETMASK' 'ARCHZBM_NET_GATEWAY_IP' 'ARCHZBM_SSH_PORT' 'ARCHZBM_SSH_KEEPALIVE_INTVL' 'ARCHZBM_SSH_AUTH_KEYS'; do
         if [[ "${!env_var}" ]]; then