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
diff --git a/tempest/api/orchestration/base.py b/tempest/api/orchestration/base.py
index 6d6000a..ffa534a 100644
--- a/tempest/api/orchestration/base.py
+++ b/tempest/api/orchestration/base.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
+from tempest.common import log as logging
 import time
 
 from tempest import clients
diff --git a/tempest/api/orchestration/stacks/test_instance_cfn_init.py b/tempest/api/orchestration/stacks/test_instance_cfn_init.py
index add8588..16509ea 100644
--- a/tempest/api/orchestration/stacks/test_instance_cfn_init.py
+++ b/tempest/api/orchestration/stacks/test_instance_cfn_init.py
@@ -13,7 +13,7 @@
 #    under the License.
 
 import json
-import logging
+from tempest.common import log as logging
 import testtools
 
 from tempest.api.orchestration import base
diff --git a/tempest/api/orchestration/stacks/test_stacks.py b/tempest/api/orchestration/stacks/test_stacks.py
index 5fed581..15979ed 100644
--- a/tempest/api/orchestration/stacks/test_stacks.py
+++ b/tempest/api/orchestration/stacks/test_stacks.py
@@ -12,7 +12,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
+from tempest.common import log as logging
 
 from tempest.api.orchestration import base
 from tempest.common.utils.data_utils import rand_name
diff --git a/tempest/cli/__init__.py b/tempest/cli/__init__.py
index 5bbedfd..90a1520 100644
--- a/tempest/cli/__init__.py
+++ b/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 @@
 from oslo.config import cfg
 
 import tempest.cli.output_parser
+from tempest.common import log as logging
 import tempest.test
 
 
diff --git a/tempest/cli/output_parser.py b/tempest/cli/output_parser.py
index 840839b..3ee3098 100644
--- a/tempest/cli/output_parser.py
+++ b/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
 
 
diff --git a/tempest/cli/simple_read_only/test_compute.py b/tempest/cli/simple_read_only/test_compute.py
index fa64561..561fd00 100644
--- a/tempest/cli/simple_read_only/test_compute.py
+++ b/tempest/cli/simple_read_only/test_compute.py
@@ -15,13 +15,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import subprocess
 
 from oslo.config import cfg
 import testtools
 
 import tempest.cli
+from tempest.common import log as logging
 
 
 CONF = cfg.CONF
diff --git a/tempest/cli/simple_read_only/test_compute_manage.py b/tempest/cli/simple_read_only/test_compute_manage.py
index a788c8b..802a206 100644
--- a/tempest/cli/simple_read_only/test_compute_manage.py
+++ b/tempest/cli/simple_read_only/test_compute_manage.py
@@ -15,10 +15,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import subprocess
 
 import tempest.cli
+from tempest.common import log as logging
 
 
 LOG = logging.getLogger(__name__)
diff --git a/tempest/cli/simple_read_only/test_glance.py b/tempest/cli/simple_read_only/test_glance.py
index b3b3eb7..fa77e8a 100644
--- a/tempest/cli/simple_read_only/test_glance.py
+++ b/tempest/cli/simple_read_only/test_glance.py
@@ -15,11 +15,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import re
 import subprocess
 
 import tempest.cli
+from tempest.common import log as logging
 
 
 LOG = logging.getLogger(__name__)
diff --git a/tempest/cli/simple_read_only/test_keystone.py b/tempest/cli/simple_read_only/test_keystone.py
index 45d519b..3bc8b3e 100644
--- a/tempest/cli/simple_read_only/test_keystone.py
+++ b/tempest/cli/simple_read_only/test_keystone.py
@@ -15,11 +15,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import re
 import subprocess
 
 import tempest.cli
+from tempest.common import log as logging
 
 
 LOG = logging.getLogger(__name__)
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 366ff43..9eb126a 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -16,7 +16,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
 import subprocess
 
 # Default client libs
@@ -30,6 +29,7 @@
 
 
 from tempest.api.network import common as net_common
+from tempest.common import log as logging
 from tempest.common import ssh
 from tempest.common.utils.data_utils import rand_name
 from tempest import exceptions
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index a55bbb2..2097f50 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -15,7 +15,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
+from tempest.common import log as logging
 
 from tempest.common.utils.data_utils import rand_name
 from tempest.common.utils.linux.remote_client import RemoteClient
diff --git a/tempest/scenario/test_snapshot_pattern.py b/tempest/scenario/test_snapshot_pattern.py
index 7725421..f21a00b 100644
--- a/tempest/scenario/test_snapshot_pattern.py
+++ b/tempest/scenario/test_snapshot_pattern.py
@@ -15,7 +15,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import logging
+from tempest.common import log as logging
 
 from tempest.common.utils.data_utils import rand_name
 from tempest.common.utils.linux.remote_client import RemoteClient