Add --output-dir

Add an --output-dir cli arg to be used alongside --config-download. The
arg controls where the downloaded ansible playbooks and log files will
be stored on the local filesystem.

The path must be writeable by the current user and mistral user, so it
will typically need to be pre-created manually with the correct
permissions.

Depends-On: I89b17d0c4f035705fd5230caad06d331fd5b5e76
implements: blueprint ansible-config-download

Change-Id: Iff7a1b211a545f1227b9e13e304b858128fb855b

tripleoclient/v1/overcloud_deploy.py

@@ -902,6 +902,16 @@ class DeployOvercloud(command.Command):
             default=False,
             help=_('Run deployment via config-download mechanism')
         )
+        parser.add_argument(
+            '--output-dir',
+            action='store',
+            default=None,
+            help=_('Directory to use for saved output when using '
+                   '--config-download. The directory must be '
+                   'writeable by the mistral user. When not '
+                   'specified, the default server side value '
+                   'will be used (/var/lib/mistral/<execution id>.')
+        )
         return parser
 
     def take_action(self, parsed_args):
@@ -998,7 +1008,8 @@ class DeployOvercloud(command.Command):
                                        parsed_args.templates,
                                        parsed_args.deployed_server,
                                        parsed_args.overcloud_ssh_user,
-                                       parsed_args.overcloud_ssh_key)
+                                       parsed_args.overcloud_ssh_key,
+                                       parsed_args.output_dir)
 
         # Force fetching of attributes
         stack.get()

tripleoclient/workflows/deployment.py

@@ -97,7 +97,7 @@ def overcloudrc(workflow_client, **input_):
 
 
 def config_download(log, clients, stack, templates, deployed_server,
-                    ssh_user, ssh_key):
+                    ssh_user, ssh_key, output_dir):
     role_net_hostname_map = utils.get_role_net_hostname_map(stack)
     hostnames = []
     for role in role_net_hostname_map:
@@ -138,11 +138,15 @@ def config_download(log, clients, stack, templates, deployed_server,
     workflow_client = clients.workflow_engine
     tripleoclients = clients.tripleoclient
 
+    workflow_input = {}
+    if output_dir:
+        workflow_input.update(dict(work_dir=output_dir))
+
     with tripleoclients.messaging_websocket() as ws:
         execution = base.start_workflow(
             workflow_client,
             'tripleo.deployment.v1.config_download_deploy',
-            workflow_input={}
+            workflow_input=workflow_input
         )
 
         for payload in base.wait_for_messages(workflow_client, ws, execution,