DISTRO not bound in heat-cfntools element

[Greg Lucas]

Attempting to build a disk image as part of trove integration testing and I get the following:

/tmp/in_target.d/install.d/05-heat-cfntools: line 7: DISTRO: unbound variable

It appears that a recent change to the heat-cfn element makes use of an unbound variable DISTRO. The fix is to modify the heat-cfn element to set DISTRO:

  DISTRO=`lsb_release -si` || true

[Greg Lucas (glucas-q)]

This issue was introduced with this change set:

https://review.openstack.org/#/c/92036

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/102623

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/102623
Committed: https://git.openstack.org/cgit/openstack/tripleo-image-elements/commit/?id=bc08854bd034b2bff645d7c7ba7ad9d4178e6eb5
Submitter: Jenkins
Branch: master

commit bc08854bd034b2bff645d7c7ba7ad9d4178e6eb5
Author: Greg Lucas <email address hidden>
Date: Wed Jun 25 16:04:09 2014 -0400

    Use DISTRO_NAME rather than unbound DISTRO

    Also correct case of distro name to match where it is being set.

    Change-Id: I05fac5eeaae3593e43355ab7cc7b995d1f46dbdc
    Closes-Bug: 1334414