Refactor BM deployment to use '--work-dir' - [2/2]

We added '--output-dir' just a few weeks ago, now it seems
we want to use '--work-dir'. See:
https://review.opendev.org/775302.

Let's re-factor to use the common consistent working directory.

Depends-On: https://review.opendev.org/780969
Change-Id: Ic903c6d1769d6a6a026208b9857680a115de6c31

tripleoclient/tests/v2/overcloud_node/test_overcloud_node.py

@@ -352,7 +352,6 @@ class TestProvisionNode(fakes.TestOvercloudNode):
                 'node_timeout': 3600,
                 'concurrency': 20,
                 'manage_network_ports': False,
-                'output_dir': mock.ANY,
                 'working_dir': mock.ANY,
             },
             inventory='localhost,',

tripleoclient/v2/overcloud_node.py

@@ -256,15 +256,6 @@ class ProvisionNode(command.Command):
                             help=_('Enable provisioning of network ports'),
                             default=False,
                             action="store_true")
-        # TODO(hjensas): Remove 'output-dir' use common 'workdir' instead.
-        # See: https://review.opendev.org/775302
-        parser.add_argument('--output-dir',
-                            help=_('Directory to use for saved output. '
-                                   'When not specified, '
-                                   '$HOME/config-download/node-config will be '
-                                   'used.'),
-                            action='store',
-                            default=None)
         parser.add_argument(
             '--working-dir', action='store',
             help=_('The working directory for the deployment where all '
@@ -278,9 +269,8 @@ class ProvisionNode(command.Command):
         self.log.debug("take_action(%s)" % parsed_args)
 
         if not parsed_args.working_dir:
-            working_dir = os.path.join(
-                os.path.expanduser('~'),
-                "overcloud-deploy-%s" % parsed_args.stack)
+            working_dir = oooutils.get_default_working_dir(
+                parsed_args.stack)
         else:
             working_dir = os.path.abspath(parsed_args.working_dir)
         oooutils.makedirs(working_dir)
@@ -293,11 +283,6 @@ class ProvisionNode(command.Command):
             ssh_key = fp.read()
 
         output_path = os.path.abspath(parsed_args.output)
-        if parsed_args.output_dir:
-            output_dir = os.path.abspath(parsed_args.output_dir)
-        else:
-            output_dir = os.path.join(constants.DEFAULT_WORK_DIR,
-                                      'node-config')
 
         extra_vars = {
             "stack_name": parsed_args.stack,
@@ -309,7 +294,6 @@ class ProvisionNode(command.Command):
             "node_timeout": parsed_args.timeout,
             "concurrency": parsed_args.concurrency,
             "manage_network_ports": parsed_args.network_ports,
-            "output_dir": output_dir,
             "working_dir": working_dir
         }