fix(xo-server/backup NG/listReplicatedVms): avoid templates and snapshots

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

@@ -37,6 +37,8 @@ declare class XapiObject {
 type Id = string | XapiObject
 declare export class Vm extends XapiObject {
   $snapshots: Vm[];
+  is_a_snapshot: boolean;
+  is_a_template: boolean;
   name_label: string;
   other_config: $Dict<string>;
   snapshot_time: number;

packages/xo-server/src/xo-mixins/backups-ng/index.js

@@ -145,6 +145,8 @@ const listReplicatedVms = (
     const oc = object.other_config
     if (
       object.$type === 'vm' &&
+      !object.is_a_snapshot &&
+      !object.is_a_template &&
       'start' in object.blocked_operations &&
       oc['xo:backup:schedule'] === scheduleId &&
       oc['xo:backup:sr'] === srId &&