[PATCH proxmox-backup] api: create target namespace when moving and it doesn't exist yet

[Hannes Laimer <h.laimer@proxmox.com>]

So the behaviour is the same what a normal `mv` would do. What still
stays required is the existance of the parent to which the namespace is
moved.

Signed-off-by: Hannes Laimer <h.laimer@proxmox.com>
---
noticed while doing some testing, though it works, i think having it
create not-existing target namespaces makes sense

 pbs-datastore/src/datastore.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pbs-datastore/src/datastore.rs b/pbs-datastore/src/datastore.rs
index 6cb1c5ec..292c56bf 100644
--- a/pbs-datastore/src/datastore.rs
+++ b/pbs-datastore/src/datastore.rs
@@ -1200,8 +1200,9 @@ impl DataStore {
         if !self.namespace_exists(source_ns) {
             bail!("source namespace '{source_ns}' does not exist");
         }
-        if !target_ns.is_root() && !self.namespace_exists(target_ns) {
-            bail!("target namespace '{target_ns}' does not exist");
+        let target_parent = target_ns.parent();
+        if !target_ns.is_root() && !self.namespace_exists(&target_parent) {
+            bail!("target parent namespace '{target_parent}' does not exist");
         }
         if source_ns.contains(target_ns).is_some() {
             bail!(
-- 
2.47.3