slapos_pdm: Only search by started_requested software installations for clean up

In case, destruction was already requested, the job of this alarm is already over, it can be considered,
cleaned.

master/bt5/slapos_pdm/SkinTemplateItem/portal_skins/slapos_pdm/SoftwareRelease_findAndDestroySoftwareInstallation.py

@@ -7,7 +7,8 @@ portal = context.getPortalObject()
 catalog_kw = dict(
   portal_type='Software Installation',
   validation_state='validated',
-  url_string=context.getUrlString()
+  url_string=context.getUrlString(),
+  **{"slapos_item.slap_state": "start_requested"}
 )
 
 count = portal.portal_catalog.countResults(