Fix H404/405 violations for api tests(1/3)

There is a lot of H404/405 violations in Tempest now, and that leads
difficult to migrate the code to tempest-lib or the other projects'
repos. This patch fixes these violations for api tests except compute
and network.

Change-Id: I783862867732b76d836153bf9ef18fb4a5ec6c6e
diff --git a/tempest/api/telemetry/base.py b/tempest/api/telemetry/base.py
index 8f07614..81f00ec 100644
--- a/tempest/api/telemetry/base.py
+++ b/tempest/api/telemetry/base.py
@@ -112,8 +112,8 @@
         super(BaseTelemetryTest, cls).resource_cleanup()
 
     def await_samples(self, metric, query):
-        """
-        This method is to wait for sample to add it to database.
+        """This method is to wait for sample to add it to database.
+
         There are long time delays when using Postgresql (or Mysql)
         database as ceilometer backend
         """