Adds investigation about IndieExternal app.

migrations/24-09-2021-investigation-harmonisation-Nc.sh

+#!/bin/bash
+
+# List instances where indie_external is not enabled
+# If an app is enabled it prints the version, if not, it doesn't
+
+for ns in `k get ns --no-headers -o custom-columns=":metadata.name"`; do # Loop all Ns
+  po=`k -n $ns get po  -l app.kubernetes.io/name=nextcloud,app.kubernetes.io/component=app --no-headers -o custom-columns=":metadata.name" | head -n1` # Get the first po
+  if [ ! -z "$po" ]; then # if there is Nc in this Ns
+    if ! k -n $ns exec $po -- php occ app:list | grep -q "indie_external: 3.9.0"; then # check that our app is not activated
+      echo $ns # Print ns if Nc installed and app not activated
+    fi
+  fi
+done
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