fix: [0km] would not read more than one key

This is due to ``ssh`` eating available standard input.

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

bin/0km

@@ -278,7 +278,7 @@ cmdline.spec::cmd:vps-setup:run() {
         label="${key##* }"
         Elt "considering adding key ${DARKYELLOW}$label${NORMAL}"
         dest="/root/.ssh/authorized_keys"
-        if ssh:run "$host" -- $sudo_if_necessary grep "\"$key\"" "$dest" >/dev/null 2>&1; then
+        if ssh:run "$host" -- $sudo_if_necessary grep "\"$key\"" "$dest" >/dev/null 2>&1 </dev/null; then
             print_info "already present"
             print_status noop
             Feed