Skip test_compare_db_flavors_with_os

This commit skips test_compare_db_flavors_with_os. This has a 100%
failure rate in the gate right now. This is likely related to the
devstack nova change creating the default flavors. But, if so this
indicates how fragile the test is and it's unrealistic dependence
on the old defaults. Let's skip for now to unblock things.

Related-Bug: #1567134

Change-Id: I6e3ef31f5bff42e4ff80742e4649ea667dc945b5
diff --git a/tempest/api/database/flavors/test_flavors.py b/tempest/api/database/flavors/test_flavors.py
index f75b867..bdb4383 100644
--- a/tempest/api/database/flavors/test_flavors.py
+++ b/tempest/api/database/flavors/test_flavors.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 from tempest.api.database import base
+from tempest.lib import decorators
 from tempest import test
 
 
@@ -58,6 +59,7 @@
     @test.attr(type='smoke')
     @test.idempotent_id('afb2667f-4ec2-4925-bcb7-313fdcffb80d')
     @test.services('compute')
+    @decorators.skip_because(bug='1567134')
     def test_compare_db_flavors_with_os(self):
         db_flavors = self.client.list_db_flavors()['flavors']
         os_flavors = (self.os_flavors_client.list_flavors(detail=True)