Add configuration tests_types

This commit adds a case-statement that can be used to
determine the type of test that can be run.

It currently only supports either running bacic_tests or
none and serves as scaffolding for future tests types (ie: tempest)
Update COI to use CiscoSystems
Replace dev_env with openstack_installer

This commit updates the top level repo to be
openstack-installer.
Abstract node definitions out of vagrant

This commit abstracts the node configurations out of
Vagrant so that they can be defined seperately as configuration.
Merge pull request #44 from bodepd/abstract_nodes

Abstract nodes