cinderclient.quotas.get() fails against Cinder service in a Devstack

Horizon integration tests which are run against devstack deployed as part of this job https://github.com/openstack-infra/project-config/blob/master/jenkins/jobs/horizon.yaml#L29 are failing due to this call https://github.com/openstack/horizon/blob/master/openstack_dashboard/api/cinder.py#L418 failing with status 500 and a message u'The server has either erred or is incapable of performing the requested operation.'

Due to the fact that integration tests passed before, most likely something in Cinder quotas machinery changed and quite recently (1-3 days ago).

/etc/cinder/cinder.conf:

[keystone_authtoken]
signing_dir = /var/cache/cinder
cafile = /opt/stack/data/ca-bundle.pem
auth_uri = http://<HOST_IP>:5000
project_domain_id = default
project_name = service
user_domain_id = default
password = <password>
username = cinder
auth_url = http://<HOST_IP>:35357
auth_plugin = password

[DEFAULT]
os_privileged_user_tenant = service
os_privileged_user_password = <password>
os_privileged_user_name = nova
glance_api_servers = http://<HOST_IP>:9292
osapi_volume_workers = 2
logging_exception_prefix = %(color)s%(asctime)s.%(msecs)03d TRACE %(name)s ESC[01;35m%(instance)sESC[00m
logging_debug_format_suffix = ESC[00;33mfrom (pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)dESC[00m
logging_default_format_string = %(asctime)s.%(msecs)03d %(color)s%(levelname)s %(name)s [ESC[00;36m-%(color)s] ESC[01;35m%(instance)s%(color)s%(message)sESC[00m
logging_context_format_string = %(asctime)s.%(msecs)03d %(color)s%(levelname)s %(name)s [ESC[01;36m%(request_id)s ESC[00;36m%(user_id)s %(project_id)s%(color)s] ESC[01;35m%(instance)s%(color)s%(message)sESC[00m
volume_clear = zero
rpc_backend = rabbit
default_volume_type = lvmdriver-1
enabled_backends = lvmdriver-1
os_region_name = RegionOne
enable_v1_api = true
periodic_interval = 60
state_path = /opt/stack/data/cinder
osapi_volume_listen = 0.0.0.0
osapi_volume_extension = cinder.api.contrib.standard_extensions
rootwrap_config = /etc/cinder/rootwrap.conf
api_paste_config = /etc/cinder/api-paste.ini
iscsi_helper = tgtadm
verbose = True
debug = True
auth_strategy = keystone
nova_catalog_admin_info = compute:nova:adminURL
nova_catalog_info = compute:nova:publicURL

[database]
connection = mysql+pymysql://root:swordfish@127.0.0.1/cinder?charset=utf8

[oslo_concurrency]
lock_path = /opt/stack/data/cinder

[lvmdriver-1]
lvm_type = default
iscsi_helper = tgtadm
volume_group = stack-volumes-lvmdriver-1
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volume_backend_name = lvmdriver-1

[oslo_messaging_rabbit]
rabbit_userid = stackrabbit
rabbit_password = <password>
rabbit_hosts = <HOST_IP>