Revert "Revert "Raise error when unbind fails on broker""

This reverts commit 2dcdb886c5980b8a21d5b706701b5a8a54d95634.
Revert "Revert "[finishes #56091544] service deprovision should give user an error when it fails""

This reverts commit cd555e860107953dbbcfe2eac1fe804ce94ca223.
Fix integration test file name

Test files need to end in `_spec.rb`.
Provide the correct buildpack urls for dea
Remove unused code
Validate service broker URLs
Revert error message change causing test failures

The patch for cloudfoundry/errors#6 broke the shared controller tests
for apps. Backing this out until we can figure out the best way forward.
Add initial Rspec Api Documentation generation

Initial version for the Events and Users objects only
Fix tests
Add test instructions to README
Move test setup to the right place
Fixed bug in spec - should return total_results => 0 but checked for == 0
Fixed spec: => -> >= and == 0 to >= 0
Added proper temp url generation when using OpenStack Swift as blob store
adds hp driver case for blobstore#download_uri_for_file
ensures that the hp_auth_version is passed to the fog storage initializer as a symbol