Comment 4 for bug 1530979

Reviewed: https://review.openstack.org/283337
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible/commit/?id=6193998108a98bfb8e1655749b9aea142a5eb520
Submitter: Jenkins
Branch: liberty

commit 6193998108a98bfb8e1655749b9aea142a5eb520
Author: Hector I Gonzalez <email address hidden>
Date: Mon Feb 22 18:48:55 2016 -0600

    Store openstack_host_sysstat_enabled as lower case value for sysstat.default.j2

    Sysstat won't enable unless the ENABLED switch has been set to true.
    Passing openstack_host_sysstat_enabled as true inside jinja will end
    up as a "True" value inside the /etc/default/sysstat rather then the
    expected "true" value and sysstat won't start.

    The added jinja filter lower will make sure that the boolean is always
    stored in lower case.

    Additionally 'openstack_host_systat_enabled' was renamed to
    'openstack_host_sysstat_enabled' to better reflect the dependency to
    sysstat.

    This is a backport of https://review.openstack.org/263427

    Change-Id: I4c8ac77c29ae4f3a1f6331fdaaab5d45abadcf44
    Closes-Bug: #1530979