Synergy log file is erased when upgrading

[Vincent]

When upgrading Synergy, the log file at /var/log/synergy/synergy.log is erased, probably replaced by an empty file during the upgrade process.

Confirmed on: CentOS 7

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/433605

[Vincent (vincent-llorens)]

This bug is not present on Ubuntu

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/433605
Committed: https://git.openstack.org/cgit/openstack/synergy-service/commit/?id=cb935dbcbc51897b3feda665ac7610b5ce4e681a
Submitter: Jenkins
Branch: master

commit cb935dbcbc51897b3feda665ac7610b5ce4e681a
Author: Vincent Llorens <email address hidden>
Date: Tue Feb 14 12:49:46 2017 +0100

    fix synergy erasing log file on upgrade

    On CentOS 7, upgrading Synergy would cause the Synergy log file to be
    overwritten. We fix this behaviour in this commit.
    Note that now the Synergy log file is created during Synergy first run,
    not during the first installation of Synergy.

    fixes bug #1664502
    Sem-Ver: bugfix

    Change-Id: Id1a4fc3871a141f1d5fd0f2c95c10464e86dda8e

[Lisa Zangrando (lisa-zangrando)]

Fix #433605