Update keystone wsgi httpd script for oslo logging

When updating to the oslo logging module, it appears that this script
was missed, and erroneously still references .DEBUG, which is not
available in the oslo logging module.  This commit corrects the issue
and updates the reference to oslo log module to not be aliased to
"logging".

The extra logic to set the debug on the instantiated logger is still
needed to ensure all logging is seen (startup config logging, etc).

fixes-bug: 1220012
Change-Id: If5b4f9f28cb9d05f914848cbdb54b10c2c5f3b2d

httpd/keystone.py

@@ -14,6 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import logging
 import os
 
 from paste import deploy
@@ -31,10 +32,9 @@
 
 from keystone.common import environment
 from keystone import config
-from keystone.openstack.common import log as logging
+from keystone.openstack.common import log
 
 
-LOG = logging.getLogger(__name__)
 CONF = config.CONF
 CONF(project='keystone')
 config.setup_logging(CONF)
@@ -43,7 +43,7 @@
 name = os.path.basename(__file__)
 
 if CONF.debug:
-    CONF.log_opt_values(logging.getLogger(CONF.prog), logging.DEBUG)
+    CONF.log_opt_values(log.getLogger(CONF.prog), logging.DEBUG)
 
 # NOTE(ldbragst): 'application' is required in this context by WSGI spec.
 # The following is a reference to Python Paste Deploy documentation