CIMI: Fix 'views' folder location

In CIMI we don't have views except the error ones.

Signed-off-by: Michal fojtik <mfojtik@redhat.com>
TrackedAt: http://tracker.deltacloud.org/patch/3a9616ced9f3f313345ef2ac7f3e398a0c07f265
* tests/cimi/collections/machine_templates_test.rb: small fix

The validation error does not contain the name of the offending parameter
* views/errors/common.xml.haml: enclose the backtrace in a CDATA section