keystone messages no being written to syslog even when use-syslog=true

[Leonardo Borda]

When setting use-syslog=true the [handler_production] and [logger_root] do not get modified hence no logs are written to the syslogd daemon.

How to reproduce
1. deploy openstack from /openstack-charm-testing
 juju-deployer -c default.yaml -d trusty-kilo
 juju deploy rsyslog rsyslog-primary
 juju deploy rsyslog rsyslog-secondary
 juju deploy rsyslog rsyslog-forwarder-ha
# make the relations
 juju add-relation rsyslog-forwarder-ha rsyslog-primary
 juju add-relation rsyslog-forwarder-ha rsyslog-secondary

2. juju service set keystone use-syslog=true

Solution
Change the following sections in charm-keystone/templates/kilo/logging.conf
Change the following sections in charm-keystone/templates/icehouse/logging.conf

to
[logger_root]
{% if root_level -%}
level={{ root_level }}
{% else -%}
level=WARNING
{% endif -%}
handlers=file,production

[handler_production]
class=handlers.SysLogHandler
level=WARNING
formatter=normal_with_name
args=(('/dev/log'), handlers.SysLogHandler.LOG_USER)

This covers the case where you have a local syslog daemon as well as a remote syslog daemon.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/290632

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/290632
Committed: https://git.openstack.org/cgit/openstack/charm-keystone/commit/?id=6ac015b6d3eca4f3102cf615d978f4ca9a8d551a
Submitter: Jenkins
Branch: master

commit 6ac015b6d3eca4f3102cf615d978f4ca9a8d551a
Author: Leonardo Borda <email address hidden>
Date: Wed Mar 9 11:03:34 2016 -0500

    Fix log handlers to work for both syslog and rsyslog

    Update the [handler_production] and [logger_root] parameters in
    logging.conf in order to ensure the logs are written to the
    syslogd daemon.

    Update to use the /dev/log socket from the syslogd daemon so that
    the logging works for both rsyslog and syslog.

    Change-Id: I841f856637b9ca90b446025be6ddaadff7ae06cd
    Closes-Bug: #1554871
    Signed-off-by: Leonardo Borda <email address hidden>