Comment 9 for bug 1485917

Reviewed: https://review.openstack.org/214172
Committed: https://git.openstack.org/cgit/stackforge/os-ansible-deployment/commit/?id=a515e835bb5aef9cf4757ef3ac79f61ae560296a
Submitter: Jenkins
Branch: master

commit a515e835bb5aef9cf4757ef3ac79f61ae560296a
Author: Jesse Pretorius <email address hidden>
Date: Tue Aug 18 13:58:45 2015 +0100

    Set iptables-persistent install execution to append to log

    This patch sets the command to install the iptables-persistent
    package in the run-playbooks script to append its output to the
    existing log instead of overwriting it.

    This is to ensure that outputs from both commands are captured,
    not just the second one.

    Change-Id: I4d45382cb44c5f811818fe1229a63e6a2c2ecdee
    Partial-Bug: #1485917