Posting a sample with a string value for resource_metadata results in a 500 when it should be a 400

[Chris Dent]

The following request to the ceilometer api results in an untrapped AttributeError and an eventual 500. It should result in a 400.

    - name: post counter with wrong metadata
      desc: metadata a string causes 500
      xfail: true
      url: /v2/meters/apples
      method: POST
      request_headers:
          content-type: application/json
      data:
          - counter_name: apples
            counter_type: gauge
            counter_unit: instance
            counter_volume: 3
            resource_id: aa9431c1-8d69-4ad3-803a-8d4a6b89fdaa
            timestamp: "2013-01-01 23:23:20"
            resource_metadata: "a string"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/208464

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/208464
Committed: https://git.openstack.org/cgit/stackforge/wsme/commit/?id=03f0c0b4d60906ce7a112094ada7df459982a4df
Submitter: Jenkins
Branch: master

commit 03f0c0b4d60906ce7a112094ada7df459982a4df
Author: Mehdi Abaakouk <email address hidden>
Date: Mon Aug 3 14:47:58 2015 +0200

    json: raise ValueError invalid list or dict

    If the expected datatype is ArrayType or DictType
    but the json value is something else raise
    ValueError instead of 500 erro because we can browse the
    dict or the list.

    Closes bug: #1428628

    Change-Id: Ibd4d95815c0b81ded8304bba4ca83e6df32d86ae

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/208467
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=d7428b7c3873bb47683c4f4d547fce138b79a74b
Submitter: Jenkins
Branch: master

commit d7428b7c3873bb47683c4f4d547fce138b79a74b
Author: Mehdi Abaakouk <email address hidden>
Date: Mon Aug 3 14:41:42 2015 +0200

    Update tests to reflect WSME 0.8 fixes

    All these bugs are now fixed in wsme 0.8.0

    Closes-bug: #1424642
    Closes-bug: #1423634
    Closes-bug: #1419110
    Closes-bug: #1428185
    Closes-bug: #1428628
    Closes-bug: #1428658
    Closes-bug: #1428624

    Change-Id: Iea8507ebc54f42786a44bfcd96246b88dd998bf0