UAA CLI not validating scopes

[x64bytes]

This is similar PR opened for UAAC at cloudfoundry/cf-uaac#64

When creating a client using the latest build of UAA, the scopes are not validated. The UAA is creating the scope with any string we give rather than validating the scopes existence within UAA. Is it any limitation that UAA has to validate scopes?, as grant types are being validated by the CLI at the same time.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/159444400

The labels on this github issue will be updated when the story is started.