Add auth_token_lifetime to undercloud.conf

The undercloud currently defines the auth token life time in the
undercloud.yaml environment in tripleo-heat-templates. At certain scale,
it makes sense to increase this so we should make it a top level
configuration item.

Change-Id: Ibf917826a2d6b2662215c58c9dd8ec8007e57881
(cherry picked from commit 438e53ad4e)

releasenotes/notes/undercloud-auth-token-expiration-configuration-6159d733f09e1b6e.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Adds `auth_token_lifetime` to undercloud.conf with a default of 14400. This
+    configuration option exposes the keystone token expirataion as a top level
+    configuration since it may need to be increased to handle larger clouds.

tripleoclient/config/undercloud.py

@@ -374,6 +374,13 @@ class UndercloudConfig(StandaloneConfig):
                        help=(_('Ironic network interface implementation to '
                                'use by default.'))
                        ),
+            cfg.StrOpt('auth_token_lifetime',
+                       default=14400,
+                       help=(_(
+                             'Authentication token expiration time in '
+                             'seconds. Note reducing this can have impacts on '
+                             'long running undercloud processes.'))
+                       ),
         ]
         return self.sort_opts(_base_opts + _opts)
 

tripleoclient/tests/config/test_config_undercloud.py

@@ -26,6 +26,7 @@ class TestUndercloudConfig(base.TestCase):
     def test_get_base_opts(self):
         ret = self.config.get_base_opts()
         expected = ['additional_architectures',
+                    'auth_token_lifetime',
                     'certificate_generation_ca',
                     'clean_nodes',
                     'cleanup',
@@ -84,6 +85,7 @@ class TestUndercloudConfig(base.TestCase):
     def test_get_opts(self):
         ret = self.config.get_opts()
         expected = ['additional_architectures',
+                    'auth_token_lifetime',
                     'certificate_generation_ca',
                     'clean_nodes',
                     'cleanup',

tripleoclient/v1/undercloud_config.py

@@ -73,6 +73,7 @@ PARAMETER_MAPPING = {
     'local_subnet': 'UndercloudCtlplaneLocalSubnet',
     'enable_routed_networks': 'UndercloudEnableRoutedNetworks',
     'local_interface': 'NeutronPublicInterface',
+    'auth_token_lifetime': 'TokenExpiration',
 }
 
 SUBNET_PARAMETER_MAPPING = {