create with pre-existed volume not showed

[hongbin]

Steps to reproduce:

First, setup Fuxi with devstack: https://github.com/openstack/fuxi/tree/master/devstack
$ cat /etc/fuxi/fuxi.conf
...
[cinder]
fstype = ext4
multiattach = false
volume_connector = osbrick
memcached_servers = 10.0.0.6:11211
signing_dir = /var/cache/fuxi
cafile = /opt/stack/data/ca-bundle.pem
auth_uri = http://10.0.0.6/identity
project_domain_name = Default
project_name = service
user_domain_name = Default
password = pass
username = fuxi
auth_url = http://10.0.0.6/identity_admin
auth_type = password
...
$ source /opt/stack/devstack/openrc demo demo
$ cinder create --name test 1
$ sudo docker volume create --driver fuxi --name test --opt volume_id=<id> # this succeeded
$ cinder list # The cinder volume was 'in-use'
+--------------------------------------+--------+------+------+-------------+----------+-------------+
| ID | Status | Name | Size | Volume Type | Bootable | Attached to |
+--------------------------------------+--------+------+------+-------------+----------+-------------+
| 9ca23942-7fb0-4e47-9227-1d42f5ce1811 | in-use | test | 1 | lvmdriver-1 | false | None |
+--------------------------------------+--------+------+------+-------------+----------+-------------+
$ sudo docker volume ls # However, we cannot list it in docker
DRIVER VOLUME NAME
$ sudo docker volume inspect test # we cannot inspect it either
[]
Error: No such volume: test

The issue is due to the fact that Fuxi was using 'service' tenant, but the cinder volume was pre-created in 'demo' tenant. Therefore, the creation succeeded because the 'service' credential has privilege to get volume from other tenants. However, list/inspect failed because it searched volume in 'service' tenant only.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/497785
Committed: https://git.openstack.org/cgit/openstack/fuxi/commit/?id=e7740fb3a7be34daad8d41edeb083af8f434bf10
Submitter: Jenkins
Branch: master

commit e7740fb3a7be34daad8d41edeb083af8f434bf10
Author: Kiseok Kim <email address hidden>
Date: Fri Aug 25 09:07:50 2017 +0000

    Adds 'all_tenants' search option in volumeprovider/cinder.py

    When user create a docker volume with a pre-created cinder volume,
    user can't see the docker volume if the pre-created cinder volume's
    tenant is diffent to the tenant Fuxi use.
    This patch adds 'all_tenants' option configurable.
    With this, user can search cinder volumes over all tenant.

    Change-Id: I0519f54c07e7ac84f53b580a34b3b4064183d8a6
    Closes-Bug: #1656960

[OpenStack Infra (hudson-openstack)]

Change abandoned by Hongbin Lu (<email address hidden>) on branch: master
Review: https://review.openstack.org/420386