Split resource_setup for database tests

Split up the resource_setup method for all the database tests, as per the
latest spec.

Partially-implements bp:resource-cleanup

Change-Id: I37278495084e6474ee85ff293f18358b307986aa
diff --git a/tempest/api/database/base.py b/tempest/api/database/base.py
index dd4c684..e67df24 100644
--- a/tempest/api/database/base.py
+++ b/tempest/api/database/base.py
@@ -27,19 +27,29 @@
     _interface = 'json'
 
     @classmethod
-    def resource_setup(cls):
-        super(BaseDatabaseTest, cls).resource_setup()
+    def skip_checks(cls):
+        super(BaseDatabaseTest, cls).skip_checks()
         if not CONF.service_available.trove:
             skip_msg = ("%s skipped as trove is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
-        cls.catalog_type = CONF.database.catalog_type
-        cls.db_flavor_ref = CONF.database.db_flavor_ref
-        cls.db_current_version = CONF.database.db_current_version
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseDatabaseTest, cls).setup_credentials()
+        cls.os = cls.get_client_manager()
 
-        os = cls.get_client_manager()
-        cls.os = os
+    @classmethod
+    def setup_clients(cls):
+        super(BaseDatabaseTest, cls).setup_clients()
         cls.database_flavors_client = cls.os.database_flavors_client
         cls.os_flavors_client = cls.os.flavors_client
         cls.database_limits_client = cls.os.database_limits_client
         cls.database_versions_client = cls.os.database_versions_client
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaseDatabaseTest, cls).resource_setup()
+
+        cls.catalog_type = CONF.database.catalog_type
+        cls.db_flavor_ref = CONF.database.db_flavor_ref
+        cls.db_current_version = CONF.database.db_current_version
diff --git a/tempest/api/database/flavors/test_flavors.py b/tempest/api/database/flavors/test_flavors.py
index ed172e9..bb7035b 100644
--- a/tempest/api/database/flavors/test_flavors.py
+++ b/tempest/api/database/flavors/test_flavors.py
@@ -20,8 +20,8 @@
 class DatabaseFlavorsTest(base.BaseDatabaseTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(DatabaseFlavorsTest, cls).resource_setup()
+    def setup_clients(cls):
+        super(DatabaseFlavorsTest, cls).setup_clients()
         cls.client = cls.database_flavors_client
 
     @test.attr(type='smoke')
diff --git a/tempest/api/database/flavors/test_flavors_negative.py b/tempest/api/database/flavors/test_flavors_negative.py
index 9f14cce..f8c7b83 100644
--- a/tempest/api/database/flavors/test_flavors_negative.py
+++ b/tempest/api/database/flavors/test_flavors_negative.py
@@ -21,8 +21,8 @@
 class DatabaseFlavorsNegativeTest(base.BaseDatabaseTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(DatabaseFlavorsNegativeTest, cls).resource_setup()
+    def setup_clients(cls):
+        super(DatabaseFlavorsNegativeTest, cls).setup_clients()
         cls.client = cls.database_flavors_client
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/database/versions/test_versions.py b/tempest/api/database/versions/test_versions.py
index 80fcecf..26d5cb2 100644
--- a/tempest/api/database/versions/test_versions.py
+++ b/tempest/api/database/versions/test_versions.py
@@ -21,8 +21,8 @@
     _interface = 'json'
 
     @classmethod
-    def resource_setup(cls):
-        super(DatabaseVersionsTest, cls).resource_setup()
+    def setup_clients(cls):
+        super(DatabaseVersionsTest, cls).setup_clients()
         cls.client = cls.database_versions_client
 
     @test.attr(type='smoke')