Use the same logger class in all test cases

tempest.common.log is used by the most test cases,
but not all of them using it.

This change is aims to fix this anomaly.

Change-Id: I45e667fc4a9938605d131585315659930bfedfce

tempest/cli/__init__.py

@@ -15,7 +15,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import os
 import shlex
 import subprocess
@@ -23,6 +22,7 @@ import subprocess
 from oslo.config import cfg
 
 import tempest.cli.output_parser
+from tempest.common import log as logging
 import tempest.test
 
 

tempest/cli/output_parser.py

@@ -18,7 +18,8 @@
 """Collection of utilities for parsing CLI clients output."""
 
 
-import logging
+from tempest.common import log as logging
+
 import re