run_upgrade.sh mitaka to newton failing, missing nginx log folder

[Luz Cazares]

Running upgrade via openstack-ansible/scripts/run-upgrade.sh. stable/mitaka to master fails on playbook repo-server.yml due to nginx log folder does not exists.

https://github.com/openstack/openstack-ansible/blob/fa9c114e51294828ddaeec5f6b8b1d1c92aa8fad/playbooks/repo-server.yml#L54l

TASK [rsyslog_client : Find all log files] *************************************
fatal: [infra01_repo_container-0e1659f2]: FAILED! => {"changed": true, "cmd": "find -L '/var/log/nginx' -type f -name '*.log'", "delta": "0:00:00.003456", "end": "2016-09-12 23:24:55.995569", "failed": true, "rc": 1, "start": "2016-09-12 23:24:55.992113", "stderr": "find: `/var/log/nginx': No such file or directory", "stdout": "", "stdout_lines": [], "warnings": []}
cmd: find -L '/var/log/nginx' -type f -name '*.log'
start: 2016-09-12 23:24:55.992113
end: 2016-09-12 23:24:55.995569
delta: 0:00:00.003456
stderr: find: `/var/log/nginx': No such file or directory

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/370931
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-repo_server/commit/?id=182da652ea347d2740456672f2e31738dfe9b3d3
Submitter: Jenkins
Branch: master

commit 182da652ea347d2740456672f2e31738dfe9b3d3
Author: Kevin Carter <email address hidden>
Date: Thu Sep 15 10:08:32 2016 -0500

    Ensure the repo server has a valid log directory

    This change is simply making sure that the repo server has a valid
    log directory at "/var/log/nginx". In some cases, generally when
    upgrading, this directory may not exists and because the package
    is already installed the directory will not be recreated. This
    change simply makes sure the log directory is created regardless.

    Closes-Bug: #1623778
    Change-Id: I823aff32417804d494c46b0d444a518e2601118d
    Signed-off-by: Kevin Carter <email address hidden>