Move compute acceptance tests into a v2 folder.

Consistency!
diff --git a/acceptance/openstack/compute/compute_test.go b/acceptance/openstack/compute/v2/compute_test.go
similarity index 100%
rename from acceptance/openstack/compute/compute_test.go
rename to acceptance/openstack/compute/v2/compute_test.go
diff --git a/acceptance/openstack/compute/pkg.go b/acceptance/openstack/compute/v2/pkg.go
similarity index 100%
rename from acceptance/openstack/compute/pkg.go
rename to acceptance/openstack/compute/v2/pkg.go
diff --git a/acceptance/openstack/compute/tools_test.go b/acceptance/openstack/compute/v2/tools_test.go
similarity index 100%
rename from acceptance/openstack/compute/tools_test.go
rename to acceptance/openstack/compute/v2/tools_test.go