test: Add diagnostic output

Author: siegfriedweber

tests/templates/kuttl/restarter/10-assert.yaml

@@ -4,6 +4,12 @@ kind: TestAssert
 timeout: 120
 commands:
   - script: |
+      pwd
+
+      ls -al
+
+      tree
+
       . ./test-script.sh
 
       # Wait for the StatefulSet to be deployed