Add backup-specific tasks to new_app template

.gitlab/issue_templates/new_app.md

@@ -28,6 +28,25 @@
   * [ ] Admin-login should grant admin privileges
   * [ ] Non-admin should not grant admin privileges
 
+### Backup/restore
+
+This applies if the app has any persistent storage that needs to be part of
+backups.
+
+* [ ] Add the label `stackspin.net/backupSet=myApp` to:
+  * [ ] the pvc(s) in `flux2/apps/myApp/pvc*.yaml`;
+  * [ ] any pod(s) that use those pvc(s); this would go in the chart's helm
+    values, with the value typically called `podLabels`, or if it doesn't have
+    that maybe `commonLabels`;
+  * [ ] the kubernetes objects controlling those pods, typically a deployment
+    (`deploymentLabels` or `commonLabels`) or statefulset (`statefulSetLabels`
+    or `commonLabels`).
+* [ ] To the same pods, i.e., the ones that use the pvc's that need to be
+  backed up, add an annotation `backup.velero.io/backup-volumes: "volume-name"`,
+  where `volume-name` is the name of the volume internal to the pod kubernetes
+  object, as shown for example in `kubectl describe pod` output.
+* [ ] Add app-specific backup/restore instructions if necessary.
+
 ### Etc
 
 * [ ] Add app to `dump_secrets()` in `stackspin/cluster.py`