Comment 0 for bug 1403195

When the underlying packages of these charms are installed via charm install hooks on Precise:
 * an older version of python-six (1.1.0-2) has already been installed by another package dep
 * apt install of the __(keystone/nova-common/glance/et al)__ package doesn't install the CA version needed (currently six 1.5.2-1)
 * this causes various install hook errors across the following charms

The plan is to eventually SRU a versioned python-six dependency for the related packages on the next point release, but to also make charm install hook changes to unblock testing and deployments now.

See related SRU bug https://bugs.launchpad.net/ubuntu/+source/keystone/+bug/1403114.

Affected charms:
 * keystone
 * nova-compute (nova-common)
 * nova-cloud-controller
 * quantum-gateway neutron-gateway
 * glance
 * heat

For example, on precise, note that the older six is installed while the CA openstack component package is installed:
  keystone 1:2014.1.3-0ubuntu2~cloud0
  python-keystone 1:2014.1.3-0ubuntu2~cloud0
  python-keystoneclient 1:0.7.1-ubuntu1~cloud0
  python-six 1.1.0-2
  Description: Ubuntu 12.04.5 LTS