Add configuration tests_types
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)

phchoic/puppet_openstack_builder,CiscoSystems/puppet_openstack_builder,phchoic/puppet_openstack_builder,CiscoSystems/puppet_openstack_builder--to-be-deleted,CiscoSystems/puppet_openstack_builder--to-be-deleted,CiscoSystems/puppet_openstack_builder,michaeltchapman/puppet_openstack_builder,michaeltchapman/puppet_openstack_builder,CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder,CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder,michaeltchapman/vagrant-consul,CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder,michaeltchapman/puppet_openstack_builder,CiscoSystems/puppet_openstack_builder--to-be-deleted,michaeltchapman/vagrant-consul,phchoic/puppet_openstack_builder