Add 409 ConflictException

Change-Id: I655f1bd462f0a167d384fe469db961332051822c

openstack/exceptions.py

@@ -118,6 +118,11 @@ class BadRequestException(HttpException):
     pass
 
 
+class ConflictException(HttpException):
+    """HTTP 409 Conflict."""
+    pass
+
+
 class MethodNotSupported(SDKException):
     """The resource does not support this operation type."""
     def __init__(self, resource, method):
@@ -162,7 +167,9 @@ def raise_from_response(response, error_message=None):
     if response.status_code < 400:
         return
 
-    if response.status_code == 404:
+    if response.status_code == 409:
+        cls = ConflictException
+    elif response.status_code == 404:
         cls = NotFoundException
     elif response.status_code == 400:
         cls = BadRequestException

openstack/tests/unit/cloud/test_domains.py

@@ -203,7 +203,7 @@ class TestDomains(base.TestCase):
                  json=domain_data.json_response,
                  validate=dict(json={'domain': {'enabled': False}}))])
         with testtools.ExpectedException(
-            openstack.cloud.OpenStackCloudHTTPError,
+            openstack.exceptions.ConflictException,
             "Error in updating domain %s" % domain_data.domain_id
         ):
             self.cloud.delete_domain(domain_data.domain_id)