setup-openstack-iscsi-multipath-storpool: Add temporary debug sleep

Change-Id: I6d9b44030afaf4757762a7997058f632c36a56a9
diff --git a/playbooks/sp-cleanup.yaml b/playbooks/sp-cleanup.yaml
index 59ac2cc..c6bb495 100644
--- a/playbooks/sp-cleanup.yaml
+++ b/playbooks/sp-cleanup.yaml
@@ -1,5 +1,9 @@
 - hosts: all
   tasks:
+    - name: Sleep for a while
+      shell:
+        cmd: sleep 3600
+
     - name: sp-whoami-hostname
       shell:
         cmd: hostname