setup_env script should be able to install Tempest from specific tag
release. Key -t added to setup_env script. It specifies Tempest tag
release which will be installed as a test runner. By default last tag
from Tempest github repository will be used. Installed by setup script,
Tempest test runner is only single available option for now. Because of
it, option --tempest-dir option is removed from refstack-client
https://storyboard.openstack.org/#!/story/309https://storyboard.openstack.org/#!/story/324
Change-Id: I182c3870a7ce4bbcb188836d189538dfd54b1c26
Ubuntu setup script removed.
New setup script was tested on latest vesions of ubuntu, debian, centos
and fedora instalations.
Change-Id: I94cff68de15d44f420e56c7793ed18476e07b442
