Also tweaked the code for `mapping set` as it was previously
using cliff Show instead of cliff Command.
Change-Id: I0ea1383a9f2dddf4b2f717b2aa16bbd60ab1720c
We should remove the 'links' portion from the returned object
for the following commands:
* create/show federation protocol
* create/show mapping
* create/show identity provider
Change-Id: I55654cce1f89de8e532f9acd8092257be33efd85
