Contrail Cloud 3.0.2 Liberty Freshly installed : Instance fails to launch with error "Unauthorized: Unable to retrieve list of volumes"

[Himanshu]

I am reporting this bug for tracking purpose since later versions of contrail do not have this problem. I was not able to find any existing bug for this issue. If there is a bug already filed feel free to link the bug to this one marking this bug as duplicate

- Freshly install Contrail Cloud 3.0.2 liberty , on Ubuntu 14.04.2. Contrail in a box.
- Upload any image in openstack and try to launch an instance. As soon as you click on launch an error is seen "Unauthorized: Unable to retrieve list of volumes"

The error seems to be because of the user defined in /etc/cinder/cinder.conf file. If you list openstack user you will see "cinderv2" listed whereas the cinder.conf file tries to use an undefined user "cinder" . I modified the file contents to fix the problem

FROM
[keystone_authtoken]
admin_tenant_name = service
admin_user = cinder
admin_password = contrail123
auth_protocol = http

TO

[keystone_authtoken]
auth_uri = http://10.85.29.8:5000/v2.0
identity_uri = http://10.85.29.8:35357
admin_tenant_name = service
admin_user = cinderv2
admin_password = contrail123
auth_protocol = http

Restart cinder services
/etc/init.d/cinder-scheduler restart
/etc/init.d/cinder-api restart