Add base class for Telemetry tests

This patch adds the base class for all Telemetry tests.

Partially implements: blueprint add-basic-ceilometer-tests

Change-Id: If467d05bceb4f5c29a7cac6c83be6fc8aae159c8

tempest/api/telemetry/base.py

@@ -0,0 +1,27 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest import config
+import tempest.test
+
+CONF = config.CONF
+
+
+class BaseTelemetryTest(tempest.test.BaseTestCase):
+
+    """Base test case class for all Telemetry API tests."""
+
+    @classmethod
+    def setUpClass(cls):
+        super(BaseTelemetryTest, cls).setUpClass()
+        if not CONF.service_available.ceilometer:
+            raise cls.skipException("Ceilometer support is required")