process host facts for iso runs

* Move isolated clean to our final run hook
* ISO and non-iso code path now share the post-fact-processing code

awx/playbooks/check_isolated.yml

@@ -18,20 +18,10 @@
         src: "{{src}}/artifacts/"
         dest: "{{src}}/artifacts/"
         mode: pull
+        delete: yes
         recursive: yes
 
     - name: Fail if previous check determined that process is not alive.
       fail:
         msg: "isolated task is still running"
       when: "is_alive.rc == 0"
-
-    - stat: path="{{src}}/facts/"
-      register: fact_cache
-
-    - name: Copy gathered facts from the isolated host.
-      synchronize:
-        src: "{{src}}/facts/"
-        dest: "{{src}}/facts/"
-        delete: yes  # delete fact cache records that go missing via clear_facts
-        mode: pull
-      when: fact_cache.stat.exists