[PATCH datacenter-manager] ui: auto-installer: parse empty string as 0 for new template counters

[Dominik Csapak <d.csapak@proxmox.com>]

otherwise adding a new template counter will result in getting an error
message that "" is not a valid value even though 0 is entered.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 ui/src/remotes/auto_installer/prepared_answer_form.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ui/src/remotes/auto_installer/prepared_answer_form.rs b/ui/src/remotes/auto_installer/prepared_answer_form.rs
index 255f36dd..431a713d 100644
--- a/ui/src/remotes/auto_installer/prepared_answer_form.rs
+++ b/ui/src/remotes/auto_installer/prepared_answer_form.rs
@@ -1075,6 +1075,7 @@ fn kv_list_to_template_counter_map_validate(v: &Vec<(String, Value)>) -> Result<
         if TEMPLATE_COUNTER_NAME_REGEX.is_match(k) {
             let value = match v {
                 Value::Number(number) => number.as_i64(),
+                Value::String(text) if text == "" => Some(0),
                 Value::String(text) => text.parse().ok(),
                 _ => None,
             };
-- 
2.47.3