Logging to /dev/log is not portable

[Roman Podoliaka]

When use_syslog is set to True, we log to /dev/log. This might not work on other platforms except Linux (https://docs.python.org/2/library/logging.handlers.html#sysloghandler)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/136842

[OpenStack Infra (hudson-openstack)]

Change abandoned by Roman Podoliaka (<email address hidden>) on branch: master
Review: https://review.openstack.org/133912

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/159606

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/159606
Committed: https://git.openstack.org/cgit/openstack/oslo.log/commit/?id=2bf8164a908b51c13d4709e63e7cb2905b5548c7
Submitter: Jenkins
Branch: master

commit 2bf8164a908b51c13d4709e63e7cb2905b5548c7
Author: John Stanford <email address hidden>
Date: Thu Feb 26 12:47:16 2015 -0800

    Make use_syslog=True log to syslog via /dev/log

    After upgrade from Icehouse to Juno OpenStack services don't log to
    syslog via /dev/log anymore. This behaviour was introduced in commit
    1188d88a73e75da5c143d0dfad34e10dad0daee0. While /dev/log is arguably
    not a very portable default, breaking the backwards compatibility is
    even worse.
    This commit restores the original behaviour. /dev/log portability
    issues will be addressed separately.
    Closes-Bug: #1385295
    Related-Bug: #1391428

    Change-Id: I5c450595fde7451a5bf9372430a53e75dd5773a3

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/136842
Committed: https://git.openstack.org/cgit/openstack/oslo.log/commit/?id=33f5c6f94d94d5464fea38229d880f177b05aff7
Submitter: Jenkins
Branch: master

commit 33f5c6f94d94d5464fea38229d880f177b05aff7
Author: Julien Danjou <email address hidden>
Date: Mon Nov 24 18:35:36 2014 +0100

    Replace RFCSysLogHandler by a syslog() based one

    Rather than using the Python provided logging module that reimplents the
    whole syslog protocol and pointing it to /dev/log (which is not
    portable), we use the system calls from the syslog module, which are
    portable and default to the behaviour we actually want.

    Closes-Bug: 1385295
    Closes-Bug: 1391428

    Change-Id: I39a36316bd8778831b1bd5e7c5e2e12ede062a37

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/193633

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/193633
Committed: https://git.openstack.org/cgit/openstack/oslo.log/commit/?id=9a6c22663b57b7f2d9071767dadf28e59075a75e
Submitter: Jenkins
Branch: stable/kilo

commit 9a6c22663b57b7f2d9071767dadf28e59075a75e
Author: Julien Danjou <email address hidden>
Date: Mon Nov 24 18:35:36 2014 +0100

    Replace RFCSysLogHandler by a syslog() based one

    Rather than using the Python provided logging module that reimplents the
    whole syslog protocol and pointing it to /dev/log (which is not
    portable), we use the system calls from the syslog module, which are
    portable and default to the behaviour we actually want.

    Closes-Bug: 1385295
    Closes-Bug: 1391428

    Partial-Bug: 1459046

    (cherry picked from commit 33f5c6f94d94d5464fea38229d880f177b05aff7)

    Conflicts:
     oslo_log/log.py
     requirements.txt

    Change-Id: I2e47c896841cbd43d1f5504f2b8b897fc432cd0b