add a REST API we can invoke from gofabric8 to update a tenant passing just the OC token

[jstrachan]

we'd need to then do a reverse lookup of the KC token inside the REST endpoint so that we can do an update tenant.

this would then mean we could have a gofabric8 recreate tenant type command which deletes a tenant, invokes the update and then asserts the tenant is setup correctly etc.

It might be nice to allow a version to be passed in as an optional argument too.

[chmouel]

I don't think we have a way to be able to reverse a OC token to a KC token without authing to KC, we may need to do ACL lists instead like done for tenant_listing here :

a18fbc3