services/security/roled/internal: Remove _role suffix from generated blessings

The blessings generated by roled when Extend=true include the _role
extension presented by the caller. This extension isn't useful in the
generated blessings. So, remove it in the most common case.

Change-Id: I213c9defcab9a8f0b400b7ed3490c0d5817e005a
2 files changed