supported_instance should be array, not string

[jichenjc]

2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager Traceback (most recent call last):
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/compute/manager.py", line 6294, in update_available_resource
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager rt.update_available_resource(context)
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py", line 492, in update_available_resource
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager self._update_available_resource(context, resources)
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py", line 271, in inner
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager return f(*args, **kwargs)
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py", line 499, in _update_available_resource
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager self._init_compute_node(context, resources)
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py", line 401, in _init_compute_node
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager self._copy_resources(resources)
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py", line 435, in _copy_resources
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager self.compute_node.update_from_virt_driver(resources)
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/objects/compute_node.py", line 336, in update_from_virt_driver
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager self.supported_hv_specs = [objects.HVSpec.from_list(s) for s in si]
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager File "/opt/stack/nova/nova/objects/hv_spec.py", line 41, in from_list
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager hv_type=data[1],
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager IndexError: string index out of range
2016-01-21 14:40:50.951 4060 ERROR nova.compute.manager

don't need to translate supported_instance to string, it should be array

[jichenjc (jichenjc)]

Found this issue in our z/VM CI test

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/272968

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/272968
Committed: https://git.openstack.org/cgit/openstack/nova-zvm-virt-driver/commit/?id=fbbcfedde64e68f8f637beabec6c859015016e38
Submitter: Jenkins
Branch: master

commit fbbcfedde64e68f8f637beabec6c859015016e38
Author: jichenjc <email address hidden>
Date: Sun Jan 24 08:23:56 2016 +0800

    not use json dump for supported_instances

    the upper layer expect an array, dump it will make it a
    string and lead to index error. So change it back to array.

    Change-Id: I62895bd11ba16084b67f8d226e071ddd4f387063
    Closes-Bug: 1537919