Proper deprecation for CredentialManager data argument

CredentialManager's data argument wasn't properly deprecated since
the deprecation was only mentioned in the docstring. Proper
deprecation requires use of warnings/debtcollector and
documentation.

bp deprecations

Change-Id: Ibdb4bda622119eec963ce5b57673dc01ff279b0e

keystoneclient/tests/unit/v3/test_credentials.py

@@ -42,6 +42,7 @@ class CredentialTests(utils.TestCase, utils.CrudTests):
     def test_create_data_not_blob(self):
         # Test create operation with previous, deprecated "data" argument,
         # which should be translated into "blob" at the API call level
+        self.deprecations.expect_deprecations()
         req_ref = self.new_ref()
         api_ref = self._ref_data_not_blob(req_ref)
         req_ref.pop('id')

keystoneclient/v3/credentials.py

@@ -14,6 +14,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from debtcollector import renames
+
 from keystoneclient import base
 from keystoneclient.i18n import _
 from keystoneclient import utils
@@ -46,13 +48,13 @@ class CredentialManager(base.CrudManager):
         if blob is not None:
             return blob
         elif data is not None:
-            # FIXME(shardy): Passing data is deprecated. Provide an
-            # appropriate warning.
             return data
         else:
             raise ValueError(
                 _("Credential requires blob to be specified"))
 
+    @renames.renamed_kwarg('data', 'blob', version='1.7.0',
+                           removal_version='2.0.0')
     @utils.positional(1, enforcement=utils.positional.WARN)
     def create(self, user, type, blob=None, data=None, project=None, **kwargs):
         """Create a credential
@@ -61,7 +63,8 @@ class CredentialManager(base.CrudManager):
         :type user: :class:`keystoneclient.v3.users.User` or str
         :param str type: credential type, should be either ``ec2`` or ``cert``
         :param JSON blob: Credential data
-        :param JSON data: Deprecated, use blob instead.
+        :param JSON data: Deprecated as of the 1.7.0 release in favor of blob
+                          and may by removed in the 2.0.0 release.
         :param project: Project, optional
         :type project: :class:`keystoneclient.v3.projects.Project` or str
         :param kwargs: Extra attributes passed to create.
@@ -94,6 +97,8 @@ class CredentialManager(base.CrudManager):
         """
         return super(CredentialManager, self).list(**kwargs)
 
+    @renames.renamed_kwarg('data', 'blob', version='1.7.0',
+                           removal_version='2.0.0')
     @utils.positional(2, enforcement=utils.positional.WARN)
     def update(self, credential, user, type=None, blob=None, data=None,
                project=None, **kwargs):
@@ -105,7 +110,8 @@ class CredentialManager(base.CrudManager):
         :type user: :class:`keystoneclient.v3.users.User` or str
         :param str type: credential type, should be either ``ec2`` or ``cert``
         :param JSON blob: Credential data
-        :param JSON data: Deprecated, use blob instead.
+        :param JSON data: Deprecated as of the 1.7.0 release in favor of blob
+                          and may be removed in the 2.0.0 release.
         :param project: Project
         :type project: :class:`keystoneclient.v3.projects.Project` or str
         :param kwargs: Extra attributes passed to create.