Since this filter doesn't actually support the OpenStack Keystone contract, rather the internal Rackspace variant, the filter was renamed including the package and class names.
Removed a duplicate test from the merge that was found while renaming the filter.
Expanded abreviations as per code review comments.
Removed the original pseudo-code comments as per code review comments.
Replaced the Scala test phrase "should be theSameInstanceAs" with simply "equals" as this is more what the tests intend.