Add an --os-endpoint-type cli optional argument to be able to select endpoint interface type

[Roxana Gherle]

User should be able to specify which endpoint URL the openstackclient should use - by setting an environment variable OS_INTERFACE which will be read by the openstack CLI. Depending on the OS_INTERFACE value, the openstackclient will use either public/admin/internal endpoint. Default will be admin if variable not set.

[Terry Howe (thowe-g)]

Shouldn't default be public?

[Haneef Ali (haneef)]

Keystoneclient defaults to "admin" interface. Keeping default=admin maintains backward compatibility

[Dean Troyer (dtroyer)]

OS_INTERFACE is not a good name for this function.

Some commands make calls to multiple APIs, do we know they will always use the same endpoint type?

[Haneef Ali (haneef)]

Can you suggest some other name? It is called interface_type in keystone. They can take the values "admin/internal/public".

As we have said if you set to interface type = "admin" it doesn't break anything. Do you know of any api which use "public" and "admin" for the same operation.

[Haneef Ali (haneef)]

Keystoneclient uses 'admin" by default, and all other services use "public" by default. So the current plan is to make keystoneclient use "public" by default, and add OS_INTERFACE_TYPE which defaults to "public"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/185193

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/198506
Committed: https://git.openstack.org/cgit/openstack/python-openstackclient/commit/?id=36391a81a3415d24c55d6bbc318157dc119da8a7
Submitter: Jenkins
Branch: master

commit 36391a81a3415d24c55d6bbc318157dc119da8a7
Author: TerryHowe <email address hidden>
Date: Sat Jul 4 09:32:16 2015 -0600

    Rename endpoint type to interface

    Change-Id: I4e21d09bc747e8210f4f79a1d6c4c7ccf2f25d1c
    Closes-Bug: #1454392