Allow multiple asks for destruction.

It allows seemless multiple calls via SlapTool.

master/bt5/vifib_slapos_core/WorkflowTemplateItem/portal_workflow/installation_slap_interface_workflow/states/destroy_requested.xml

@@ -23,6 +23,7 @@
             <value>
               <tuple>
                 <string>report_error</string>
+                <string>request_destroy</string>
               </tuple>
             </value>
         </item>

master/bt5/vifib_slapos_core/bt/revision

-47
\ No newline at end of file
+48
\ No newline at end of file