Comment 3 for bug 1560905

OPENSTACK_RELEASE should be set accordingly to value of release name from the [0] to "ubuntu 14.04"
The release is matched by the name substring in the [1], but nailgun returns the releases in the reversed order [2]
Thus we can't use "ubuntu" value for OPENSTACK_RELEASE, due Ubuntu+UCA release is latest ubuntu release.

[0] https://github.com/openstack/fuel-web/blob/master/nailgun/nailgun/fixtures/openstack.yaml#L1949
[1] https://github.com/openstack/fuel-qa/blob/c05866763918f04fb454e3015ecae26e3244ab67/fuelweb_test/models/nailgun_client.py#L198-L201
[2] https://github.com/openstack/fuel-web/blob/master/nailgun/nailgun/api/v1/handlers/release.py#L50