refactoring async

- centralized skipping
- also fixed module name broken by previous refactor
- let action modules handle async processing
- moved async into base action class's module exec
- action plugins can now run final action as async
- actually skip copy if base skips
- fixed normal for new paths
- ensure internal stat is never async
- default poll to 10 as per docs
- added hint for callback fix on poll
- restructured late tmp, now a pipeline query
- moving action handler to connection as networking does
- fixed network assumption invocation is always passed
- centralized key cleanup, normalized internal var
- _supress_tmpdir_delete now in _ansible_xxx and gets removed from results
- delay internal key removal till after we use em
- nicer tmp removing, using existing methods
- moved cleanup tmp flag to mking tmp func

lib/ansible/modules/utilities/logic/async_wrapper.py

@@ -253,7 +253,7 @@ if __name__ == '__main__':
             # the argsfile at the very first start of their execution anyway
             notice("Return async_wrapper task started.")
             print(json.dumps({ "started" : 1, "finished" : 0, "ansible_job_id" : jid, "results_file" : job_path,
-                               "_suppress_tmpdir_delete": not preserve_tmp}))
+                               "_ansible_suppress_tmpdir_delete": not preserve_tmp}))
             sys.stdout.flush()
             time.sleep(1)
             sys.exit(0)