CLI graph download works incorrect

[Dmitry Belyaninov]

Detailed bug description:
fuel2 graph download --env 1 --all command works incorrect

Steps to reproduce:
[root@nailgun ~]# fuel2 graph list --env 1
+----+------+-------+-------------------------------+
| id | name | tasks | relations |
+----+------+-------+-------------------------------+
| 4 | None | | as "default" to cluster(ID=1) |
+----+------+-------+-------------------------------+
[root@nailgun ~]# fuel2 graph download --env 1 --all
Tasks were downloaded to /root/cluster_graph.yaml
[root@nailgun ~]# ll cluster_graph.yaml
-rw-r--r--. 1 root root 3 Jun 14 10:40 cluster_graph.yaml
[root@nailgun ~]# cat cluster_graph.yaml
[]
[root@nailgun ~]#
[root@nailgun ~]#
[root@nailgun ~]# fuel2 graph download --env 1 --all --type default
Tasks were downloaded to /root/cluster_graph.yaml
[root@nailgun ~]# ll cluster_graph.yaml
-rw-r--r--. 1 root root 149065 Jun 14 10:41 cluster_graph.yaml
[root@nailgun ~]#

Expected results:
equal results for command
Actual result:
empty result for short command
Reproducibility:
100%
Workaround:
set single type
Impact:
n/d
Description of the environment:
[root@nailgun ~]# shotgun2 short-report
cat /etc/fuel_build_id:
 460
cat /etc/fuel_build_number:
 460
cat /etc/fuel_release:
 9.0
cat /etc/fuel_openstack_version:
 mitaka-9.0
Additional information:
n/d

[Dmitry Belyaninov (dbelyaninov)]

May be there is correlation with 1563851

[Vitalii Kulanov (vitaliy-t)]

As far as I can see this bug was fixed for 10.0 (Newton release) here: https://bugs.launchpad.net/fuel/+bug/1576261 and doesn't reproduce for 10.0 (http://paste.openstack.org/show/516720/).
So, I think it should be backported to 9.0-updates.