[PATCH datacenter-manager] ui: auto-installer: correctly validate numeric counters in form

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

field values are usually strings, so when a user entered any number
here, it would display:

invalid value: "1"

since only numbers were expected here.

To fix this, simply parse strings into numbers.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 ui/src/remotes/auto_installer/prepared_answer_form.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ui/src/remotes/auto_installer/prepared_answer_form.rs b/ui/src/remotes/auto_installer/prepared_answer_form.rs
index d932efe7..b5c59626 100644
--- a/ui/src/remotes/auto_installer/prepared_answer_form.rs
+++ b/ui/src/remotes/auto_installer/prepared_answer_form.rs
@@ -1040,7 +1040,12 @@ fn kv_list_to_template_counter_map_validate(v: &Vec<(String, Value)>) -> Result<
     let mut map = BTreeMap::<String, i32>::new();
     for (k, v) in v {
         if TEMPLATE_COUNTER_NAME_REGEX.is_match(k) {
-            match v.as_i64().and_then(|v| v.try_into().ok()) {
+            let value = match v {
+                Value::Number(number) => number.as_i64(),
+                Value::String(text) => text.parse().ok(),
+                _ => None,
+            };
+            match value.and_then(|v| v.try_into().ok()) {
                 Some(v) => {
                     map.insert(k.clone(), v);
                 }
-- 
2.47.3