Tag test_nova_keypair_resources as gate, not slow

This test doesn't boot any servers (not even cirros) so it can be
a standard gate test.

Change-Id: I73b84816d0fbedb65b395d7bc2ab3644262d898c
Partial-Bug: #1350099
diff --git a/tempest/api/orchestration/stacks/test_nova_keypair_resources.py b/tempest/api/orchestration/stacks/test_nova_keypair_resources.py
index e22a08b..e3ffdaf 100644
--- a/tempest/api/orchestration/stacks/test_nova_keypair_resources.py
+++ b/tempest/api/orchestration/stacks/test_nova_keypair_resources.py
@@ -48,7 +48,7 @@
         for resource in resources:
             cls.test_resources[resource['logical_resource_id']] = resource
 
-    @test.attr(type='slow')
+    @test.attr(type='gate')
     def test_created_resources(self):
         """Verifies created keypair resource."""
 
@@ -68,7 +68,7 @@
             self.assertEqual(resource_type, resource['resource_type'])
             self.assertEqual('CREATE_COMPLETE', resource['resource_status'])
 
-    @test.attr(type='slow')
+    @test.attr(type='gate')
     def test_stack_keypairs_output(self):
         resp, stack = self.client.get_stack(self.stack_name)
         self.assertEqual('200', resp['status'])