slapos_cloud: Relax OSS instance destruction conditions

Since the way of renaming the software_release_url proven to avoid having
unexpected results AND it is required in many cases to directly destroy an
instance, allow direct destruction of such instances.

master/bt5/slapos_cloud/SkinTemplateItem/portal_skins/slapos_cloud/SoftwareInstance_viewRenameAndRequestDestroyAction.py

@@ -5,7 +5,7 @@ portal = context.getPortalObject()
 if portal.portal_membership.isAnonymousUser():
   raise Unauthorized("You cannot invoke this API as Annonymous")
 
-if context.getSlapState() not in ["stop_requested"]:
+if context.getSlapState() not in ["stop_requested", "start_requested"]:
   return context.Base_redirect(keep_items={"portal_status_message": "This %s is on %s state and cannot be destroyed." \
     % (context.getPortalType(), context.getSlapState())})