Adds CRUD support for service providers as it's now available through
keystoneclient

Closes-Bug: 1435962
Depends-On: If802e8a47e45ae00112de3739334b4b5482d0500
Change-Id: Ic55101e50209070aa49ca2adc91c89ba754c8c68

The federation APIs for the identity providers introduce a new parameter
for every identity provider, named remote_ids, which contains a list of
entity ID associated with. This parameter can be provided during the creation
of the identity provider and can be updated at any time. For more information
look at the blueprint:

https://blueprints.launchpad.net/keystone/+spec/idp-id-registration

This patch add the support to this new parameter in the command line by
inserting the option "--remote-id" in the following commands:

- "identity provider create"
- "identity provider set"

Additionally, the values can be read from a file, specified by
"--remote-id-file", containing an entity id per line.

Change-Id: Ie93340ee57e54128daa70d8a7bd0a9975ff7eef4
Depends-On: I12a262c55b5f6b5cc7007865edf30f14269da537
Implements: blueprint idp-id-registration

Adding the possibility to create projects hierarchies by adding
the parent field in the create project call.

Co-Authored-By: Victor Silva <victor@lsd.ufcg.edu.br>

Implements: bp hierarchical-multitenancy
Change-Id: I4eac4f5bc067634cc38c305dacc59ab1da63c153

Change-Id: Ia6b6c25eded43b899b3aa026227ad2859f1c67dd

Change-Id: Id4c1371ca28b9fd884ec75061edca700fd69886c

Similar to projects, we shouldn't allow users and groups to
change domains. The server side tosses up an error but osc
should restrict that behaviour in the first place.

Related-Bug: #1418384

Change-Id: I860291a5859c576021b18e35d1a12c32abfb6ca5