feat(xo-server/snapshotVm): handle removed method (#4736)

Fixes #4735

This is necessary because CH 8.1 removed this method.

CHANGELOG.unreleased.md

@@ -7,6 +7,9 @@
 
 > Users must be able to say: “Nice enhancement, I'm eager to test it”
 
+- [Snapshot] Fallback to normal snapshot if quiesce is not available [#4735](https://github.com/vatesfr/xen-orchestra/issues/4735) (PR [#4736](https://github.com/vatesfr/xen-orchestra/pull/4736)) \
+  Fixes compatibility with **Citrix Hypervisor 8.1**.
+
 ### Bug fixes
 
 > Users must be able to say: “I had this issue, happy to know it's fixed”

packages/xo-server/src/xapi/index.js

@@ -1502,6 +1502,8 @@ export default class Xapi extends XapiBase {
         } catch (error) {
           const { code } = error
           if (
+            // removed in CH 8.1
+            code !== 'MESSAGE_REMOVED' &&
             code !== 'VM_SNAPSHOT_WITH_QUIESCE_NOT_SUPPORTED' &&
             // quiesce only work on a running VM
             code !== 'VM_BAD_POWER_STATE' &&