Rename images variable in TempestConfigPrivate

The images variable in TempestConfigPrivate is the wrong name since the
group in tempest.conf is actually 'image' so rename it to match the
config file along with any usage of the variable.

Change-Id: I3144734942151c0e807c53e329709abcb9438167
diff --git a/tempest/api/image/v1/test_images.py b/tempest/api/image/v1/test_images.py
index 8c62c05..d8b79ca 100644
--- a/tempest/api/image/v1/test_images.py
+++ b/tempest/api/image/v1/test_images.py
@@ -71,7 +71,7 @@
         resp, body = self.create_image(name='New Http Image',
                                        container_format='bare',
                                        disk_format='raw', is_public=True,
-                                       copy_from=CONF.images.http_image)
+                                       copy_from=CONF.image.http_image)
         self.assertIn('id', body)
         image_id = body.get('id')
         self.assertEqual('New Http Image', body.get('name'))
diff --git a/tempest/config.py b/tempest/config.py
index 068193b..1233389 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -786,7 +786,7 @@
         self.compute_feature_enabled = cfg.CONF['compute-feature-enabled']
         self.identity = cfg.CONF.identity
         self.identity_feature_enabled = cfg.CONF['identity-feature-enabled']
-        self.images = cfg.CONF.image
+        self.image = cfg.CONF.image
         self.image_feature_enabled = cfg.CONF['image-feature-enabled']
         self.network = cfg.CONF.network
         self.network_feature_enabled = cfg.CONF['network-feature-enabled']
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 840518a..0fc304a 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -112,7 +112,7 @@
         region = CONF.identity.region
         endpoint = self.identity_client.service_catalog.url_for(
             attr='region', filter_value=region,
-            service_type=CONF.images.catalog_type, endpoint_type='publicURL')
+            service_type=CONF.image.catalog_type, endpoint_type='publicURL')
         dscv = CONF.identity.disable_ssl_certificate_validation
         return glanceclient.Client('1', endpoint=endpoint, token=token,
                                    insecure=dscv)
diff --git a/tempest/services/image/v1/json/image_client.py b/tempest/services/image/v1/json/image_client.py
index 17271cc..bc9db38 100644
--- a/tempest/services/image/v1/json/image_client.py
+++ b/tempest/services/image/v1/json/image_client.py
@@ -35,7 +35,7 @@
 
     def __init__(self, auth_provider):
         super(ImageClientJSON, self).__init__(auth_provider)
-        self.service = CONF.images.catalog_type
+        self.service = CONF.image.catalog_type
         self._http = None
 
     def _image_meta_from_headers(self, headers):
diff --git a/tempest/services/image/v2/json/image_client.py b/tempest/services/image/v2/json/image_client.py
index 38aef2d..b825519 100644
--- a/tempest/services/image/v2/json/image_client.py
+++ b/tempest/services/image/v2/json/image_client.py
@@ -30,7 +30,7 @@
 
     def __init__(self, auth_provider):
         super(ImageClientV2JSON, self).__init__(auth_provider)
-        self.service = CONF.images.catalog_type
+        self.service = CONF.image.catalog_type
         self._http = None
 
     def _get_http(self):