Save the command line arguments into a global context

* Once cli args are parsed, they're constant.  So, save the parsed args
  into the global context for everyone else to use them from now on.
* Port cli scripts to use the CLIARGS in the context
* Refactor call to parse cli args into the run() method
* Fix unittests for changes to the internals of CLI arg parsing
* Port callback plugins to use context.CLIARGS
  * Got rid of the private self._options attribute
  * Use context.CLIARGS in the individual callback plugins instead.
  * Also output positional arguments in default and unixy plugins
  * Code has been simplified since we're now dealing with a dict rather
    than Optparse.Value

test/units/plugins/strategy/test_strategy_linear.py

@@ -80,15 +80,12 @@ class TestStrategyLinear(unittest.TestCase):
             all_vars=dict(),
         )
 
-        mock_options = MagicMock()
-        mock_options.module_path = None
-
         tqm = TaskQueueManager(
             inventory=inventory,
             variable_manager=mock_var_manager,
             loader=fake_loader,
-            options=mock_options,
             passwords=None,
+            forks=5,
         )
         tqm._initialize_processes(3)
         strategy = StrategyModule(tqm)