trove: skip broken tests

Some smoke tests in Trove are broken and ignored. They shouldn't be tested,
it breaks CI that run Tempest (ie: Puppet OpenStack).

Change-Id: Icdd6fd281c799c45850542555e95e77f1fd16675
Related-Bug: #1567134
Related-Bug: #1577017
diff --git a/tempest/api/database/flavors/test_flavors.py b/tempest/api/database/flavors/test_flavors.py
index bdb4383..bb7a0a4 100644
--- a/tempest/api/database/flavors/test_flavors.py
+++ b/tempest/api/database/flavors/test_flavors.py
@@ -27,6 +27,7 @@
 
     @test.attr(type='smoke')
     @test.idempotent_id('c94b825e-0132-4686-8049-8a4a2bc09525')
+    @decorators.skip_because(bug='1567134')
     def test_get_db_flavor(self):
         # The expected flavor details should be returned
         flavor = (self.client.show_db_flavor(self.db_flavor_ref)
@@ -38,6 +39,7 @@
 
     @test.attr(type='smoke')
     @test.idempotent_id('685025d6-0cec-4673-8a8d-995cb8e0d3bb')
+    @decorators.skip_because(bug='1567134')
     def test_list_db_flavors(self):
         flavor = (self.client.show_db_flavor(self.db_flavor_ref)
                   ['flavor'])